牛津上海版八年級上冊《Module 1 My life Unit 3 Trouble!》2020年同步練習(xí)卷（3）

一、詞匯應(yīng)用

• 1．All sounds make waves.
     When you hear your friend's voice，these sound waves go into your （1）e

  and you can identify（識別） your friend's voice.
     （2）U

  ，we cannot see sound waves but we can if we use some simple （3）m

  .Put a piece of tissue（紙巾） close to your （4）l

  and speak.Then you can see the tissue moving when you speak.If you speak loudly，the tissue moves more，and if you speak softly，the tissue moves less.This happens because the sound waves have vibration（振 動）．
     In （5）s

  ，there are names for different sound waves.When the sound vibration is （6）s

  ，we call this a low-pitch （音調(diào)） sound.But when the sound vibration is fast，we call this a high-pitch sound.Pitch （7）d

  how high or low a sound is.When the sound has less energy，we say it has a soft volume（音量）.But when the sound has more energy，we say it has a loud jye.ai.Volume is a measure of how loud or soft a sound is.
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一、詞匯應(yīng)用

• 4．A thousand years ago，Hong Kong was covered by a thick forest.As more and more people came to live in Hong Kong，these trees were cut down and burnt.Now there is no forest left，though there are still some small areas covered with trees.We call these "woods".
     Elephants，tigers and many （1）o

  animals were living in the thick forest.When people came to live in Hong Kong，the animals began to die out.Early farmers grew rice and （2）r

  pigs and chickens in the valleys.They cut down the trees and burnt them.They needed fire to keep （3）t

  warm in winter，to cook their food and to keep away the dangerous animals.Elephants quickly （4）d

  because there was not enough food for them.So did most of the wolves and tigers.
     You might think that there are no longer any animals in Hong Kong （5）e

  in the zoos，but there are still about 36 different animals living there.One of the most interesting of Hong Kong's animals is the barking deer.These are beautiful little animals （6）w

  a rich brown coat and a white patch under the tail.They look like deer but they are much like a dog barkjye.aig.In Hong Kong the barking deer has only one （7）r

  enemy（敵人）--- men.People hunt these little animals though it is illegal.There are now not many barking deer left.So it is important for people to protect wild animals.
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• 5．Did you know that bacteria （細(xì)菌） live everywhere？ They live in the soil and the water.They live in plants and every living thing.They （1）e

  live on and in the bodies of animals and people.
     Can you find and （2）p

  at the bacteria on your body now？
     No way!You can' t see these tiny single-celled living things without a microscope（顯微鏡）．
     However，you know they are there.Sometimes，bacteria in the water or soil can be （3）h

  .They cause diseases in people，plants，and animals.In （4）h

  ，bacteria can cause sicknesses like ear infections （感染）．In plants，bacteria work as decomposers （分解體）．However，bacteria can be （5）h

  too.Some scientists （6）h

  bacteria in the environment to do good things.For example，they put bacteria into polluted environments to get （7）r

  of industrial waste.And bacteria are used to clean up sewage and oil spills.
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