牛津译林版（2019）必修3《Unit 1 Nature in the balance Period One》2021年同步练习卷

Ⅰ.单词拼写

• 1．This kind of

  （土壤）is not suitable for growing peanuts.
  组卷：1引用：2难度：0.9

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• 2．By the end of the century，if not sooner，the world's oceans will be bluer and greener thanks to a warming

  （气候）.
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• 3．Chinese settlers made great contributions to the development of American

  （大陆）during the 19th century.
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• 4．To tell the truth，smoking has a bad

  （影响）on one's health.
  组卷：2引用：3难度：0.9

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• 5．Not everyone has realized that

  （野生生物）has thoughts，feelings，and most importantly，equal rights to survive.
  组卷：2引用：2难度：0.9

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• 6．The number of people employed in

  （农业） has fallen in the last decade．
  组卷：16引用：7难度：0.9

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• 7．So scientists are trying their best to save the

  （物种）from going out of existence.
  组卷：0引用：2难度：0.9

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• 8．Many young farmers have come to big cities to make a

  （生计）.
  组卷：2引用：2难度：0.9

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• 9．From 2004 to 2013，agricultural land values doubled，and they continue to rise in many r

  （地区）. （根据中英文提示填空）
  组卷：12引用：2难度：0.7

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Ⅴ.阅读理解

• 27．There are many gardening tips.Some suggest playing music for your house plants，having conversations with them，or even giving them a gentle touch now and then.Most of these practices are probably more for the benefit of the gardener than the garden，and generally harmless enough but except the last one.Your plants really dislike it when you touch them.
     A new study out of the La Trobe Institute for Agriculture and Food has found that most plants are extremely sensitive to a touch，and even a light touch can significantly stunt（阻碍）their growth. "The lightest touch from a human，animal，insect，or even plants touching each other in the wind，can cause a huge gene response in the plant，" Jim Whelan，who led the new study，said. "Within 30 minutes of being touched，10% of the plant's genome（基因组）is changed.This involves a huge expenditure（消耗）of energy which is taken away from plant growth.If the touching is repeated，then plant growth is reduced by up to 30%."
     Whelan and his team are still trying to find out why plants respond，at the genetic level，so strongly.They do have some theories，however. "We know that when an insect lands on a plant，genes are activated（激活）preparing the plant to defend itself against being eaten，" said Dr Yan Wang，co-author of the study.
     Until more research is done，it's just a guess at this point.Still，the findings might already lead to new methods for how agriculturalists deal with their crops，to best promote healthier growth.
     It's worth noticing that while the study found that plants often respond to just a single touch in negative ways，it's really repeated touching that causes lasting stunted growth.That's because the plants are looking for patterns in the touching，to tell harmful touch from random touch.So it doesn't matter if you accidentally brush up against a bush during a walk through the woods.
  
  （1）How is the passage mainly developed？

  
  A．By comparing.
  B．By giving examples.
  C．By listing numbers.
  D．By showing results of studies.
  （2）Why can touching stunt a plant's growth according to the study？

  
  A．It leads to the plant's energy expenditure.
  B．It makes the plant sensitive to threats.
  C．It causes a genetic disorder in the plant.
  D．It prevents the plant absorbing nutrients.
  （3）What's the importance of the study by Whelan and his team？

  
  A．It gives us more useful gardening tips.
  B．It helps find ways to ensure plants' healthy growth.
  C．It contributes to the further study on genes.
  D．It uses data to warn people not to touch plants.
  （4）What is the passage mainly about？

  
  A．Something is done to help plants grow.
  B．Plants' genome can be changed easily.
  C．Plants don't really like to be touched.
  D．What we do every day may destroy plants.
  组卷：3引用：1难度：0.6

  解析

Ⅵ.语法填空阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

• 28．The cheetah（猎豹），an expert hunter，sits（1）

  （silent）atop a hill and scans the herds of feeding animals looking for the perfect prey（猎物）.Finding a target，it moves quietly through the grass until it is close enough（2）

  （know）it can get its reward.
      The cheetah is perfectly built for the kill.Its colouring helps it to disappear into the landscape to avoid（3）

  （see）.And its speed over a short distance，the fastest in the animal world，（4）

  （allow）it to chase（追逐）its target.Once the prey is killed，the cheetah pulls the carcass（尸体）to a safe place，even（5）

  （pull）it up into a tree to stop other predators（捕食性动物）from stealing （6）

  .
      However，the cheetah is also a highly（7）

  （endanger）animal.Once found throughout Asia and Africa，cheetahs today are racing towards（8）

  （extinct）.Loss of habitat and declining numbers of their prey threaten the future of these cats.To change the fall in cheetah numbers，animal lovers are working to protect them.
      （9）

  addition，conservation groups are encouraging local farmers to protect cheetahs （10）

  come on their land.It will be a sad day if this beautiful animal disappears from our planet.
  组卷：6引用：2难度：0.5

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