外研版（2019）选修3《Unit 5 Learning from nature Part 2》2021年同步练习卷

Ⅰ.单词拼写

• 1．The plant in the garden

  （开花） between May and June.
  组卷：3引用：4难度：0.7

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• 2．Perhaps the

  （魅力） of the physical book will be lost one day，but I doubt it.
  组卷：3引用：4难度：0.7

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• 3．This company has produced a type of

  （小麦） which can be grown in the south.
  组卷：2引用：4难度：0.8

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• 4．All colours

  （褪色）-especially under the impact of direct sunlight.
  组卷：2引用：4难度：0.7

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• 5．The boy wanted to

  （堆放） the boxes one on top of the other.
  组卷：1引用：2难度：0.7

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• 6．They

  （打扫）out the classroom well after school yesterday.
  组卷：1引用：2难度：0.7

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Ⅱ.用方框内短语的适当形式填空

• 7．

  be known for，nothing but，be used to，for instance，in my opinion，all the time，think about，participate in，be irrelevant to，the same as

  （1）The essay which you wrote

  the topic.
  （2）I have to remind myself repeatedly that I'm not a child anymore.Otherwise，I feel

  before.
  （3）Jack will have to

  a sporting activity that day，so he can't accompany you to go there.
  （4）Lola is so determined that she never

  quitting.
  （5）Guilin is a tourist attraction which

  its beautiful scenery.
  （6）Sandy could do

  admit to his teacher that he was wrong.
  （7）Many great men have risen from poverty-Lincoln and Edison，

  .
  （8）This method can

  solve the problem.
  （9）

  ，learning English is a step-by-step process.
  （10）Opportunities are present

  ，but often they disappear unnoticed.
  组卷：8引用：4难度：0.4

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Ⅲ.单句语法填空

• 8．My teacher patted me

  （gentle） to comfort me.
  组卷：0引用：2难度：0.7

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• 9．There is a world of

  （different） between the two dictionaries.
  组卷：0引用：2难度：0.7

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能力提升练Ⅰ.阅读理解

• 26．While elephants born without tusks （长牙）are not unheard of，they normally form just 2 to 6 percent of the population.However，that is not the case at Mozambique's Gorongosa National Park，where an astonishing 33 percent of female elephants born after the country's civil war ended in 1992 are tuskless.While that may appear to be just a coincidence，Joyce Poole，an elephant behavior expert，has another theory.She thinks we may be witnessing the unnatural evolution of the species due to the constant hunting of elephants for valuable ivory.
     Poole says before the country's 15-year-long civil war，the 100，000-acre park was home to over 4，000 elephants.However，by the time the conflict ended in 1992，about 90 percent of them had been killed for ivory to help finance weapons （武器）and meat to feed the soldiers.Of the less than 200 survivors，over 50 percent of adult females had no tusks.Therefore，it is not surprising that the park's tuskless elephant population has grown greatly.
     This is not the first time researchers have observed a great change in the population of elephants.At Zambia's South Luangwa National Park and Lupande Game Management Area，areas whose elephants were heavily hunted in the 1970s and 1980s，35% of elephants 25 years old or above and 13% of those younger than 25 are now without tusks.A study published in 2008 found that the number of tuskless females at the Ruaha National Park in Tanzania went from 10.5 percent in 1969 to almost 40 percent in 1989，largely due to illegal hunting for ivory.
     The recent ban on ivory in both the US and China should help get rid of，or at least reduce，elephant hunting.However，scientists are not sure how long it will take the elephants with a higher rate of tuskless females to change  the trend.
  
  （1）What is the probable cause of the phenomenon mentioned in Paragraph 1 ？

  
  A．Illegal hunting.
  B．Constant farming.
  C．A pure coincidence.
  D．Natural evolution.
  （2）Why did people kill so many elephants during the civil war in Mozambique？

  
  A．To get funds by selling ivory.
  B．To develop new weapons.
  C．To provide food for local people.
  D．To make ivory products.
  （3）Which of the following had the earliest record on tuskless elephants？

  
  A．Gorongosa National Park.
  B．South Luangwa National Park.
  C．The Ruaha National Park.
  D．Lupande Game Management Area.
  （4）What does the underlined phrase "the trend" in the last paragraph refer to？

  
  A．Elephants are facing greater danger.
  B．Elephants are growing more slowly.
  C．Fewer female elephants are staying alive.
  D．More female elephants are tuskless.
  组卷：7引用：1难度：0.5

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Ⅱ.语法填空

• 27．Grand Canyon National Park recently turned 100 years old．The（1）

  （nature）wonder in northern Arizona became one of America's early national parks in 1919．A century later，about 6 million people a year visit the park，（2）

  is about the size of the state of Delaware．
      Native tribes（部落） had many names for the huge canyon．But in 1869，（3）

  （explore） John Wesley Powell gave it a name that stuck：the Grand Canyon．The canyon isn't the world's longest or deepest．But it surely is grand．It offers beautiful views．
      The canyon itself is far（4）

  （old） than the park．No one knows exactly（5）

  old the canyon is．The rocks（6）

  the bottom are about 1.8 billion years old．
      Humans first came to the area about 12，000 years ago．They left behind a large number of stone tools．For the past century，tools（7）

  （make） from small sticks（8）

  （find） in some of the canyon's caves．
      Plenty of animals live in the park．Desert bighorn sheep are（9）

  largest animals in the Grand
  Canyon．（10）

  （measure） 300 pounds，they climb over the rocks．The park is home to almost 375 kinds of birds and a few living things that can be found nowhere else．
  组卷：29引用：3难度：0.6

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