外研版（2019）选择性必修2《Unit 5 A delicate world Period 1》2023年同步练习卷

一、完形填空

• 1．For Aravind Tharunsri and Thaaragai Aarathana，every day is Environment Day and every hour is Earth Hour.And they are on a mission to（1）

  oceans.
      Thaaragai was never afraid of water.She started floating even when under one.Being a passionate diver，Aravind always wanted to make his daughter（2）

  diving.Her vision came true when she became（3）

  to dive in shallow waters.She first started training in small tubs，then in swimming pools and（4）

  made a smooth transition to the ocean.
      Now，Thaaragai can call attention to the issue of（5）

  marine species and draw our（6）

  to her ongoing battle against water pollution.She（7）

  a record in Assist World Records Attempt for swimming an 18-km stretch under the theme 'Save the Ocean'.With help and encouragement from her father，Thaaragai also made a short documentary on marine（8）

  and presented it in various schools to spread awareness.
      The eight-year-old girl（9）

  her birthday with a diving adventure.She spotted jellyfish，grouper and corals.The diving session didn't end there as the young girl started spotting plastics.She didn't have the heart to（10）

  them.Both father and daughter（11）

  as much as they could.The young（12）

  has also been on a mission to clean up the beaches and the ocean as well as to（13）

  awareness of marine pollution.
      Thaaragai hopes more kids.jye.ai join. "Why wait for Ocean's Day or Environment Day？Every day is important when we（14）

  against climate change.I'm（15）

  to do my duty as a citizen and I hope you too.jye.ai join me，" the young diver said.
  
  

  （1）	A．clean up	B．focus on	C．make up	D．make out
  （2）	A．accept	B．abandon	C．quit	D．learn
  （3）	A．thrilled	B．disappointed	C．qualified	D．excited
  （4）	A．eventually	B．suddenly	C．frequently	D．relatively
  （5）	A．dangerous	B．extinct	C．energetic	D．endangered
  （6）	A．intention	B．responsibility	C．attention	D．memory
  （7）	A．broke	B．kept	C．witnessed	D．set
  （8）	A．protection	B．pollution	C．development	D．damage
  （9）	A．treated	B．completed	C．celebrated	D．proved
  （10）	A．ignore	B．deal	C．manage	D．value
  （11）	A．bought	B．collected	C．packed	D．threw
  （12）	A．diver	B．dancer	C．singer	D．swimmer
  （13）	A．switch	B．connect	C．raise	D．compare
  （14）	A．swim	B．compete	C．go	D．fight
  （15）	A．reluctant	B．determined	C．patient	D．talented
  组卷：4引用：4难度：0.5

  解析

二、阅读理解

• 2．In the last 50 years，sea surface temperatures around Antarctica have risen by 1-2°C，which is more than twice the global average.
     Loss of species
     Global warming could basically change the ecosystem，leading to the loss of some species.Sharks are going to arrive in Antarctica as long as the warming trend continues，a bit more slowly than crabs-crabs are going to get there first，but once they do get there they are able to eat the organisms that live there.
     Professor Wilga said the arrival of sharks and shell-crushing bony fishes would lead to great changes in the number and proportions （比例）of species found there.
     Shrimp，ribbon worms and brittle stars are likely to be the most attackable to population declines.Animals living in shallow waters in Antarctica are unique on Earth today because they evolved（进化）in a very cold environment over tens of millions of years.
     Extreme conditions
     In the course of a process we call Antarctic cooling that started about 40 million years ago，all major seafloor predators such as sharks and crabs went extinct in Antarctica because they were not able to deal with these extreme conditions.
     However，today global warming is removing barriers to invasions and we've seen recently that crabs，especially king crabs，are on the doorstep of Antarctica-they can potentially re-invade the shallow waters if warming continues.
     Urgent local and global actions are needed to protect this last environment and measures are needed to stop alien species being brought in through ships.
     Strange creatures
     Animals that live on the seafloor of Antarctica are some of the strangest creatures on Earth.The extreme cold and darkness has presented huge challenges to marine life over the passage of time，leading to the evolution of fish equipped with anti-freeze proteins in their blood.
  
  （1）How will these alien species affect the ecosystem in Antarctica？

  
  A．They will change the extremely cold conditions in Antarctica.
  B．They will change the numbers and proportions of species in Antarctica.
  C．The sea surface temperature of Antarctica will rise more quickly.
  D．The number of shrimp and ribbon worms will increase in Antarctica.
  （2）How does the author feel about the alien species' invasion to Antarctica？

  
  A．Worried.
  B．Doubtful.
  C．Satisfied.
  D．Excited.
  （3）Which is the best title of this passage？

  
  A．Creatures in Antarctica Are Unique
  B．The Extreme Conditions in Antarctica
  C．Alien Species Are Not Found in Antarctica
  D．Alien Species May Change Antarctic Ecosystem
  组卷：10引用：2难度：0.6

  解析

三、语法填空

• 3．The polar bear is found in the Arctic Circle and some big land masses as far south as Newfoundland．While they are rare north of 88°，there is evidence（1）

  they range all the way across the Arctic，and as far south as James Bay in Canada．It is difficult to figure out a global population of polar bears as much of the range has been（2）

  （poor） studied；however，biologists calculate that there are about 20，000-25，000 polar bears worldwide．
     Modern methods（3）

  tracking polar bear populations have been employed only since the mid-1980s，and are expensive（4）

  （perform） consistently over a large area．In recent years some Inuit people in Nunayut（5）

  （report） increases in bear sightings around human settlements，leading to a（6）

  （believe） that populations are increasing．Scientists have responded by （7）

  （note） that hungry bears may be congregating（聚集） around human settlements，leading to the illusion（错觉） that populations are（8）

  （high） than they actually are．Of（9）

  nineteen recognized polar bear sub populations，three are declining，six（10）

  （be） stable，one is increasing，and nine lack enough data．
  组卷：1189引用：16难度：0.5

  解析

四、选词填空

• 4．

  take in，break down，rely on，feed on

  （1）Caterpillars（毛虫）

  a wide range of trees，shrubs and plants.
  （2）You should

  your methods so that each method does a particular job.
  （3）They

  the weekly boat for their supplies of food in the past.
  （4）What we collected and

  became the source material for the creation.
  组卷：4引用：3难度：0.7

  解析

五、单词拼写

• 5．A truck went

  of control and crashed into the front of the clinic.
  组卷：0引用：3难度：0.7

  解析

七、完成句子

• 16．He walked into the dark street

  .
  他手里拿着拐杖，走入黑暗的街道。
  组卷：0引用：2难度：0.9

  解析

• 17．你放心，我们乐意随时帮助你。
  You

  we are willing to assist you at any time.
  组卷：2引用：2难度：0.8

  解析