北師大版（2019）必修第三冊《Unit 8 Green Living Section D》2021年同步練習(xí)卷（課后一練）

一、單句語法填空

• 1．You should make yourself

  （hear） when speaking.
  組卷：1引用：2難度：0.7

  解析

• 2．He won't like such questions

  （discuss） at the meeting.
  組卷：1引用：2難度：0.7

  解析

• 3．Another tradition is to have their photographs

  （take）.
  組卷：1引用：2難度：0.7

  解析

• 4．The cruel boss had his employees

  （work） all day long.
  組卷：0引用：2難度：0.7

  解析

• 5．The news that he told us was very

  （excite）．
  組卷：4引用：3難度：0.7

  解析

• 6．The teacher stood among the

  （laugh） children.
  組卷：1引用：2難度：0.7

  解析

• 7．Those

  （wish）to join this club should sign here．
  組卷：2引用：5難度：0.9

  解析

三、閱讀理解

• 21．More than two thirds of the world's polar bears will be wiped out by 2050，according to a shocking new study.By then，scientists say，global warming will have melted 42 percent of the Arctic sea ice.By 2100，only a very few of these important creatures will be left.
     The report has been produced by the US Geological Survey.The scientists have publicised their findings in the hope of influencing Dirk Kempthorne，who was a US Interior Secretary and has been asked to put polar bears on the US endangered species list.
     Polar bears depend on floating sea ice as a platform for hunting seals，which are their main food.Without enough ice，polar bears would be forced to go onto the land，where they are poorly skilled hunters，and would be unlikely to adapt to the life on the land in time.Experts say few little bears would survive and the stress could make many females unable to get pregnant.
     The team of American and Canadian scientists spent six months studying bears，on the ground，from spotter planes and in the lab，using computer models.Some team members fear the result is even worse for the bears than what their report says.They say the Arctic is warming faster than anywhere in the world and much faster than their computer had been forecasting.Satellite observations have showed that the ice has decreased to an all-time low.
     However，not everyone in the scientific community believes that global warming is happening on such an alarming scale.Another investigation has found that polar bears are still being hunted by wealthy "sportsmen" who want their skins and heads.At least ten international companies offer bear-hunting trips.
  
  （1）What do we know about Dirk Kempthorne according to the passage？

  
  A．He is an animal scientist.
  B．He is a protector of animals working for the US government.
  C．He was asked to put polar bears on the US endangered species list.
  D．He offered to put polar bears on the endangered species list.
  （2）Why will polar bears die out if there is not enough sea ice？

  
  A．Because polar bears can't catch enough food without ice.
  B．Because polar bears eat ice when they feel thirsty.
  C．Because polar bears will be easily found by hunters without ice.
  D．Because most female bears are used to giving birth under ice.
  （3）After a six-month study，some scientists fear that

  .
  A．there is something wrong with their computers
  B．polar bears will disappear even faster than they ever expected
  C．their computer models are not as accurate as they expected
  D．global warming will destroy everything in the Arctic
  （4）What is this passage mainly about？

  
  A．Global warming makes the whole world different.
  B．Human beings are responsible for the endangered species.
  C．Most of the polar bears will be wiped out by the end of this century.
  D．Scientists have found that most animals in the Arctic will die out by the end of this century.
  組卷：5引用：3難度：0.6

  解析

四、語法填空

• 22．Earth Day is an event（1）

  （annual）celebrated on April 22.（2）

  （found）by Senator Gaylord Nelson，an American politician and environmentalist，it was originally aimed at helping the public to know the current situation of air and water pollution and（3）

  （get）people to care about the earth.
      In 1962，Rachel Carson's bestselling book Silent Spring created an（4）

  （aware）of the dangerous effects of pesticides（農(nóng)藥）.Then，a fire，（5）

  broke out in 1969 on Cleveland's Guyahoga River，shed light on the problem of chemical pollution in water.Senator Gaylord Nelson dreamed of（6）

  similar large event that would get people to take environmental issues seriously.In 1969，he was inspired by protests against the Vietnam War and came up with the idea for Earth Day.
     In the fall of 1969，Nelson announced it and appealed to the entire country to get involved.Consequently，telegrams，letters and telephone calls（7）

  all over the country poured in.Since 1970，Earth Day celebrations have grown.Later，Nelson （8）

  （award）the Presidential Medal of Freedom in recognition of his work.
      Today，Earth Day is celebrated around the world every April 22．Sometimes numerous communities celebrate Earth Week，an entire week of（9）

  （activity）focused on the environmental issues.In 2017，the March for Science（10）

  （occur）on Earth Day （April 14，2018）and was followed by the People's Climate Mobilization.
  組卷：5引用：1難度：0.5

  解析