题目内容

In a little-known part of the counter-terrorism(反恐怖主义) world, one of the most effective detection systems is a 600-pound animal that works for about 20 pounds of fish a day.

Since the 1960s, the United States and a handful of other countries have trained dolphins and sea lions to detect sea mines and swimmers, to recover inert torpedoes(鱼雷)and to test objects used in Naval exercises.

Program officials estimate that the sea lions in the Marine Mammal Program have recovered millions of dollars of U.S. Naval torpedoes and instrumentation dropped on the sea floor.

The U.S. Navy kept its Marine Mammal Program a secret until the 1990s, and this spring CNN became one of only a handful of media outlets to see firsthand how the program works.

The program has trained about 75 Pacific bottlenose dolphins, with natural biosonar (生物声纳) that tracks better than any manmade device; and 35 California sea lions, with superb underwater eyesight.

Not only do these trained marine mammals track and retrieve millions of dollars in U. S. military equipment, they are also helping to save lives.

The Navy won't disclose whether the dolphins and sea lions have effectively intercepted (阻拦)terrorists attempting to do harm to any U.S. facilities.

"Either way, it serves as a deterrent(阻碍) effect." says Christian Harris, operations supervisor for the program. The mammals can be deployed(调动) via C-130 cargo aircraft to perform their missions anywhere in the world within 72 hours. They have been used in exercises from Alaska to Hawaii, operating in great temperature and environmental ranges. They also have the capability to operate off vessels.

Dolphins most recently were deployed in the Iraq war, performing mine detection and clearance operations in the Persian Gulf to ensure safe passage for humanitarian ships delivering aid. Some of these Iraq war "veterans" are now back home, tasked with a new mission: guarding nuclear submarines in their homeports of Bremerton, Washington, and Groton, Connecticut.

1.The underlined word "retrieve" in Paragraph 6 can be replaced by ________.

A.find out           B.recover           C.save             D.detect

2.Which is NOT the purpose of the Marine Mammal Program?

A.To detect sea mines and swimmers.

B.To save lives of people.

C.To recover inert torpedoes.

D.To help the U.S. Naval test equipment.

3.What can be inferred according to the text?

A.These trained marine mammals eat pounds of fish a day.

B.The U.S. Navy performed the Marine Mammal Program for about 30 years secretly.

C.These mammals can carry out a task everywhere.

D.A lot of countries will train dolphins and sea lions for anti-terrorism.

4.What would be the best title for the passage?

A.The Special Skills of Marine Mammals        B.The U.S. Anti-terrorism Program

C.Exceptional Anti-terrorism Member         D.Trained Marine Mammals

 

【答案】

【小题1】B

【小题2】B

【小题3】B

【小题4】C

【解析】

试题分析:可爱乖巧的海豚和海狮充当高效反恐先锋(pioneer),成为美国反恐大军中的佼佼者。它们不仅可为美国海军减少巨额损失,同时还能帮助救赎生命。

【小题1】通过上下文可知“retrieve”有“get sth back”之意。在第三段“...have recovered millions of dollars of U.S. Naval torpedoes...”中“recover”刚好符合此意。选B。

【小题2】见第二段。“to save lives of people”是执行该计划产生的结果,而非目的。选B。【小题3】由第二段“Since the 1960s, the United States and a handful of other countries have trained dolphins and sea lions”及第四段“The U.S. Navy kept its Marine Mammal Program a secret until the 1990s”可知美国海军秘密进行该计划大约30年。选B。

【小题4】主旨题:从文章的第一二段的内容可知:美国在训练海豚和海狮充当高效反恐先锋。选C。

考点:考查科普类短文

点评:文章内容有些难度,但题目主要考查了细节题,只要带着题目到文中找到关键的句子,就可以得到答案,同时要注重综合语言能力的运用,结合语境,做出准确的判断。

 

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the opposite thing.And they really promote reading to children, which is so good for children.I have found
that this is true with my own children.
     I am not sure if it is the book or the fact that you are spending quality time with them, undivided time
that they will remember for their entire life.Reading to children is one of the most bonding experiences you can have.
      Children enjoy sitting on your lap while your voice flows over them.As the reader it is fun to watch
their littl e faces as they are moved with the flow of the story.They are laughing one moment and on the
next page the story has moved them to tears.As the storyteller, I am just as moved as they are;I am
caught up in the story as our emotions flow up and down.You can easily lose a whole afternoon in reading.
      This is an experience that children then try to pass on to younger children, reading books to them.My
daughter was so into reading that if she couldn't line up some neighbors'children she could be reading her
books to, she would line up her stuffed animals and read to them.Well, she also tried to teach her neighbors and teddy bears math, and "ocean science "as she called it.She would read anything she could to them.
And to my astonishment the neighbors'parents told me they really appreciated the fact that their children
were doing so much better in school.

1. The writer mentions the idea of professionals and PhDs so as to ________.
A. introduce his own viewpoint
B. show the importance of his idea
C. please readers
D. attract the attention of readers

2. The writer mentions his own children in this text for the purpose of ________.
A. showing the cleverness of his children
B. explaining the advantages of reading to children
C. telling the importance of studying together with parents
D. showing his children were interested in reading

3. The writer thinks that ________.
A. you should place your children on your lap while reading to them
B. children's feelings change while you read books to them
C. it is easy to kill time while you are reading books to children
D. reading to children is one of the most interesting experiences

4. According to the text, which of the following is NOT true about the writer's daughter?
A. She lined up some neighbors'children and read to them.
B. She lined up her stuffed animals and read to them.
C. She would teach her teddy bears math and "ocean science".
D. She would read anything she could to her parents.

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