تدريب Shadowing: Listening practice through dictation 4 Unit 1-10 - listening English - LPTD -hoc tieng anh - تعلم التحدث بالإنجليزية عبر الفيديو
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The End and the environment.
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Unit 1.
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Hibernation.
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Some animals in cold climates hibernate.
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This means that they spend the winter months in a very long and deep sleep.
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Many animals find shelter underground.
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They dig out shelters to sleep in.
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Animals that cannot dig find cracks or holes at the base of trees and bushes.
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If they like the place they find, they might use it for years and years.
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Animals that hibernate include cold-blooded animals such as lizards, frogs, and snakes.
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Many warm-blooded animals also hibernate such as mice, bats, and squirrels.
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When these animals are hibernating, they seem like they are not alive at all.
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Warm-blooded animals seem colder to the touch.
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However, their blood is still very warm.
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Hibernating animals have a very slow heartbeat.
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They almost stop breathing.
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Extra blood sugar and fat in their bodies keep them alive.
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They eat lots of food just before they hibernate.
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Winters that do not stay cold are dangerous for hibernating animals.
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They can sometimes wake up in their shelters when it gets a little warm.
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Then they use energy by moving around.
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During winter, there is very little food.
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These animals can get very thin and weak.
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If they move around too much and do not eat, they can die.
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Animals hibernate to escape the cold.
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There are also animals in hot climates that escape the heat.
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During very hot or dry weather, they sleep underground.
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This is called astivation.
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Unit 2.
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Falling Leaves.
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Autumn or fall is the season between summer and winter.
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The days become shorter and the air gets cooler.
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Trees sense these changes, so they start preparing for colder weather.
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Trees that have leaves block water and food from coming through the branches to the leaves.
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When this happens, the leaves die.
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They fall off the tree or the wind blows them away.
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This is why autumn is usually called fall in America.
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As the leaves start to die, they appear to change from green to red, yellow, orange or brown.
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Actually, the leaves are really these colors all year long.
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They look green because of a chemical called chlorophyll.
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Chlorophyll works with the sun to help the trees make food.
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In autumn, when there is less sun, the tree cannot make chlorophyll, so the green color fades.
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This reveals other colors, like red and yellow, that were always in the leaves.
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Like trees, animals also sense changes in the cooler autumn climate.
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Animals that hibernate eat a lot during autumn.
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They gain weight to store energy in the form of fat.
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They use this energy to survive the winter while hibernating.
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birds survive the cold in a different way, they leave.
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Each year many birds migrate south to warmer climates during autumn.
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They migrate north again in the spring.
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Not a bad idea, if you ask me.
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After all, who would refuse a mid-winter trip to sunny Thailand?
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The death of the dinosaurs is a great mystery.
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About 65 million years ago, dinosaurs lived all over the Earth.
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They had existed for nearly 200 million years.
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Suddenly, they all became extinct.
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Many scientists believe that the dinosaurs were killed by a large meteor.
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They think that this meteor was about 6 to 12 miles wide.
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It crashed into southern Mexico and made a hole about 130 miles wide.
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The crash threw dust and dirt into the sky.
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Dust clouds darkened the Earth's atmosphere.
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The crash caused fires, earthquakes, and tidal waves.
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The plants were killed.
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The oceans were poisoned.
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Very soon, there was no food left for the plant-eating dinosaurs.
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When they died, there was no food for the meat-eating dinosaurs.
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The meteor killed about 70% of all plants and animals on Earth.
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The only animals that could survive were small ones that could eat many different kinds of food.
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Some scientists say the meteor alone did not cause dinosaurs to become extinct.
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They think that dinosaurs were already getting weaker.
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They are not sure why.
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One reason might be disease.
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Another might be climate change.
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A big part of the mystery is why some types of animals survived.
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If climate change killed dinosaurs, it should also have killed frogs.
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If the meteor killed most sea reptiles, it should have killed crocodiles.
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Yet frogs and crocodiles still exist in the world today.
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Unit 4.
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Acid rain.
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I hate this rain.
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It's causing the traffic to back up for miles.
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Well, I hate this traffic because it's helping turn this rain into acid rain.
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I heard that acid rain has really bad effects.
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Doesn't it cause cancer and brain damage and even Alzheimer's disease?
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It definitely can, but the major thing it does is cause breathing problems.
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The acid in the rain comes from smoke and gases that are given off by cars and factories.
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It's like riding your bike behind a bus that's showering you with its exhaust fumes.
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Oh, I was reading something about that the other day.
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It said there's too much sulfur in the air and that it's killing thousands of people every year.
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Yes, sulfur is the major element in factory and car exhaust.
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It combines with oxygen and nitrogen in the air to become the acid in acid rain.
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This stuff doesn't just kill us, you know.
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It also kills trees and lakes and animals.
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The acid soaks into the plants and animals so that anyone who eats the plants and animals is also eating the acid.
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This sounds terrible.
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What can people do to stop acid rain?
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One simple thing they could do is to use less energy.
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Another way to stop acid rain is to drive less, or at least carpool.
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Imagine if every car on this road had four people in it right now.
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There would be fewer cars and a lot less acid rain.
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Unit 5.
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The Weather Forecast Part 1 And now over to Barry with our weather forecast for this weekend.
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How's it looking for this weekend, Barry?
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Speaking for myself, I know I'm looking forward to clear skies.
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The past two weeks have been even rainier than usual for Seattle.
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Well, Sue, residents of Seattle will be happy to hear
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that this rainy spell we've been having is finally coming to an end.
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Although we've seen occasional showers today, by tonight things should dry out and Friday morning should be clear and sunny.
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This fine weather should continue until the end of the weekend, with temperatures ranging from 55 to 75 degrees,
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so everyone can put away those umbrellas.
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Back to you, Sue.
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Thank you, Barry.
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On behalf of the Thursday 6 o'clock news team, we wish you a pleasant evening.
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Part 2 Did you hear the weather report, Jenny?
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It looks like it'll be a clear weekend after all, so we won't have to cancel our trip to the lake.
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That's almost unbelievable.
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I'm really looking forward to getting out of the city and camping under the stars.
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But we'd better get our stuff ready tonight, Paul, if we're planning to leave tomorrow right after work.
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Yes, we'll need our tent, sleeping bags, camping stove, and a cooler for the drinks.
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What about food?
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Let's stop at a store and pick up some groceries on the way out.
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Sounds good.
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Well, we'd better get packing if we want to be ready to go by 5 p.m tomorrow.
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Science and Technology.
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Unit 6.
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Who invented that?
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What's so funny?
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I can't concentrate on my work if you keep laughing loudly like that.
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I'm sorry.
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It's just that I'm reading this article in Science Today magazine about some of the unusual things that people have invented.
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These inventions are incredible.
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Okay.
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Tell me about some of these inventions, and let's see if I think they're as funny as you do.
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All right.
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The first one is a ladder for spiders, a thin, flexible rubber strip which attaches to the top edge of the bath.
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Haha.
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I wonder how long it took someone to invent that.
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Another inventor has designed a portable seat that you wear on a belt around your waist.
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In this picture, it looks like a big plastic cushion.
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Well, that is very unusual.
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But who would want to walk around with a portable plastic seat hanging from their waist all the time?
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Another unusual invention is this one.
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Look, it's a car plate that indicates whether the driver is a man
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or a woman by using different colors on either side.
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There's one color for males and one for females.
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What's the point of that invention?
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The inventor says that other road users will change the way they behave.
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They will become more polite if they know a woman is driving, so there will be fewer car accidents.
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Huh, do you really think that will happen?
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That's completely unbelievable.
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Unit 7, the white noise machine.
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And now, ladies and gentlemen, the moment you have all been waiting for.
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Here's the winner of this year's science contest, Charles Moore.
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Charles, tell everyone about your invention.
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Thank you.
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For the science contest this year, I've invented a white noise machine.
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Let me explain what that is.
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Have you ever been kept awake at night because of the sound of traffic or people talking or loud music?
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These types of noise are sometimes called dark noise.
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Dark noise is made up of sounds that bother you so much that you can't concentrate on what you are doing.
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White noise is not exactly noise.
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In fact, white noise can't be heard at all.
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White noise is made up of invisible waves of sound
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that reduce the effects of dark noise by making sounds of the opposite frequency.
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It's like being in the ocean and seeing a large wave coming toward you.
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It might knock you down.
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But if you could send a wave, or many small waves, toward the big wave, it wouldn't be as powerful, because the small waves would hit it and reduce its size.
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My machine does this with sound.
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As a sound enters the microphone, the machine determines the sound's frequency.
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Then it makes a sound in the opposite frequency that cancels out the first sound.
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I hope my machine will give some peace and quiet to people living in noisy places.
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Thank you.
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Unit 8.
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Inches and centimeters.
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Hi, Julie.
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I'm trying to figure out the dimensions of this MP4 player I want to buy, but I'm having trouble converting these English measurements.
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You're really good at mathematics, aren't you?
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It says that the MP4 player is 3.6 inches tall and 2 inches wide.
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But what does that mean in centimeters?
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Well, according to my math book, 1 inch equals 2.54 centimeters,
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so to convert that, we need to multiply each English measurement by that number.
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Wait, I have a calculator in my pocket.
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Great!
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According to the calculator, that would make it 9.1 centimeters tall and, let's see, about 5 centimeters wide.
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So, its height is about 9 centimeters and its width is about 5 centimeters.
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But what about its weight?
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The website says that it weighs 3.6 ounces.
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We multiply 3.6 by 28.3, which is the equivalent in grams, and that converts to about 102 grams.
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All right, then.
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The MP4 player is about 9 centimeters tall and 5 centimeters wide and weighs about 102 grams.
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I thought it would have to have larger dimensions to be able to hold 5,000 songs, but it's small and light.
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Do you think I should buy it, Julie?
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It sounds like a good product, but it depends on the price.
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Well, now I have the same sort of problem again.
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Could you help me figure out how to convert Chinese currency to our currency?
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Unit 9.
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Communicating Online Computers have transformed the way people communicate.
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In some ways, this transformation is good, but in other ways, it could be harmful.
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Statistics show that millions of people use the Internet every day.
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People shop online, play games, and search for information.
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Studies also show that people use the Internet mainly for communication.
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The Internet has made communication fast and convenient.
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Email can travel anywhere within seconds.
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Chat rooms include people from all over the world.
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People can even make Internet telephone calls.
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However, this type of communication is very different from what people did in the past.
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People spend less time talking face-to-face.
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They might chat for days without being in the same room with a real person.
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They also might communicate with many people at the same time.
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Some researchers think this is unhealthy.
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One study on Internet use found that people who used the Internet a lot were lonely.
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Also, they did not communicate as much with members of their family.
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Many people have criticized this study.
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They say it did not include enough people and that loneliness is hard to measure.
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In my opinion, all types of communication are good.
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It is great to email someone and get a fast response.
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It is also nice to talk face-to-face.
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We can do both.
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The Internet is a fantastic tool.
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We should use it wisely to benefit from it.
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Unit 10.
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Science for Girls Hi, my name is Sandy.
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Welcome to Physics, my favorite class.
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Although there are 30 students in our class, only 6 of us are girls.
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Most of my friends don't like science as much as I do.
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They are convinced that science and mathematics are boy subjects.
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They say that boys learn about science and mathematics by playing with toys like building blocks, racing cars, and simple machines,
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while girls play with toys like dolls and tea sets.
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They say their parents didn't do science experiments with them or encourage them to learn math.
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Well, that wasn't the case with me.
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I played with dolls, too, but my parents also build up my confidence in science and math.
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They used long plastic rods, which are like sticks, to help me learn addition, subtraction, multiplication, and division.
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For my eighth birthday, they gave me a kids' chemistry set, which helped me do all sorts of cool experiments.
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Whenever we went to the park, my parents asked me different questions about the plants and animals that we saw.
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When we got home, we looked up the answers together.
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In school, my teachers were surprised.
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They were used to boys giving all the answers in science class.
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They were impressed with my science exam scores.
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I have lots of confidence in myself.
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I know that boys are not smarter than girls in science and math classes.
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I just wish I could convince my friends.
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Thank you.
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أنت تتدرب على اللغة الإنجليزية باستخدام "Listening practice through dictation 4 Unit 1-10 - listening English - LPTD -hoc tieng anh" مع تقنية الـ Shadowing.
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التظليل الصوتي (Shadowing) تقنية تعلم لغة مدعومة علمياً، طُورت أصلاً لتدريب المترجمين الفوريين المحترفين. الطريقة بسيطة لكنها قوية: تستمع لصوت إنجليزي أصلي وتكرره فوراً بصوت عالٍ — كظل يتبع المتحدث بتأخير 1-2 ثانية. تُظهر الأبحاث تحسناً كبيراً في دقة النطق والتنغيم والإيقاع وربط الأصوات والاستماع والطلاقة.