高考英语总复习 第一部分 基础考点聚焦 Unit3 Under the sea知能演练轻松闯关 新人教版选修7

Unit 3 Under the sea

Ⅰ.单句语法填空

1．Next time I hope you’ll go ____________I tell you to.

答案：where

2．After I heard the terrifying news，nothing could have stopped me from feeling ____________(scare) to death.

答案：scared

3．We have an ____________(urge) need for help; we are running out of water.

答案：urgent

4．____________(abandon) to playing computer games，Wang Ping has fallen behind the other students in his studies.

答案：Abandoned

5．We felt at home with her and were impressed with the ____________(deep) of her knowledge.

答案：depth

6．With economy developing at great speed，our city____________(witness) quite a few changes in recent years.

答案：has witnessed

7．A lack of __________(aware) of cultural difference to local customs can cause problems.

答案：awareness

8．When she sees her mother，the girl can’t help ____________(cry)．

答案：crying

9．There is no surprise that Linda became a writer.Even when she was a child，she had a____________(vividly) imagination.

答案：vivid

10．The program will give young athletes the chance to ____________(sharp) their skills.

答案：sharpen

Ⅱ.阅读理解

(2016·山东省威海一中模拟)Coral reefs(珊瑚礁) are not just beautiful to look at，but also very useful.They shelter nearly 25% of ocean life and provide food for billions of people.However，like many other species，this amazing ecosystem(生态系统) is in danger of dying out!

There are two main reasons for the destruction—the rising carbon dioxide levels caused by global warming as well as human influences like bottom operation.While not much can be done about the former，the loss caused by the latter can be reduced. Bottom operation involves dropping nets to the ocean bed and then dragging them up when filled with fish.This action damaged the ocean floor，causing the coral branches to separate from the reefs.While that is very discouraging，the good news is that if these branches are found quickly，they can be saved.At present，that work is being performed by volunteer divers.But the method has only limited success because they cannot stay long underwater，nor reach depths of over 200 meters where some of the

deep­sea coral grows.

However，this is not the case for Coralbots—the robots that can constantly seek out broken branches.A team of “coralbots”，each individually working to simple rules will piece together damaged bits of coral，allowing them to regrow.They are programmed to be able to distinguish between other things and the coral.The robots work together in groups，similar to bees.If one coralbot is damaged then the others will still be able to complete the task.

Dr Lea­Anne Henry said：“The pr oject of using coralbots offers us the possibility to restore(修复) the function of reefs.It is in the final stage of testing.Once ready，the researchers hope to build hundreds of them and use them effectively in the waters off Scotland and then hopefully in the oceans across the world.”【解题导语】本文主要介绍了珊瑚礁所面临的问题以及应对的方法。由于全球变暖以及人类的一些海底作业活动，珊瑚礁濒临灭绝。而Coralbots却是一个挽救珊瑚礁的好帮手，它可以长时间待在水下以帮助受损的珊瑚礁重新生长。

1．Which of the following is a cause of the danger that coral reefs are facing? A．The appearance of new creatures.

B．The seriously polluted sea water.

C．The activities of volunteer divers.

D．Human activities like bottom operation.

D解析：细节理解题。根据文章第二段的第一句话“There are two main reasons for the destruction—the rising carbon dioxide levels caused by global warming as well as huma n influences like bottom operation.”中的human influences like bottom operation可知选D。

2．Compared with volunteer divers，coralbots________.

A．can stay longer underwater

B．must work as bees do

C．can distinguish what is coral

D．can never be damaged

A解析：细节理解题。根据第三段最后的“But the method has only limited success because they cannot stay long underwater，nor reach depths of over 200 meters where some of the deep­sea coral grows.”以及第四段的“However，this is not the case for Coralbots...”可知，志愿者不能长时间待在水下，但是Coralbots可以。故选A。3．What does the underlined word “them” in the last paragraph refer to? A．Coralbots. B．Broken branches.

C．Working bees. D．Bits of coral.

A解析：词义猜测题。根据下文的“e them effectively in the waters off Scotland and then hopefully in the oceans across the world.”可知这里的them指代的是上文提到的Coralbots.因为要用这些东西来修复珊瑚礁。故选A。

4．We can infer from the passage that________.

A．bottom operation has affected most underwater creatures

B．broken branches of coral can regrow if saved in time

C．hundreds of the coralbots have worked well in the oceans

D．with the coralbots all damaged coral reefs can be restored

B解析：推理判断题。根据文章第四段的“...this is not the case for Coralbots—the