Question

In a little-known part of the counter-terrorism（反恐怖主義） 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（魚雷）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 (生物聲納) 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 （阻攔）terrorists attempting to do harm to any U.S. facilities.
"Either way, it serves as a deterrent（阻礙） effect." says Christian Harris, operations supervisor for the program. The mammals can be deployed（調(diào)動） 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.
【小題1】The underlined word "retrieve" in Paragraph 6 can be replaced by ________.

A．find out

B．recover

C．save

D．detect

【小題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.

【小題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.

【小題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

Answer 1

【小題１】B
【小題２】B
【小題３】B
【小題４】C

解析試題分析：可愛乖巧的海豚和海獅充當(dāng)高效反恐先鋒(pioneer)，成為美國反恐大軍中的佼佼者。它們不僅可為美國海軍減少巨額損失，同時還能幫助救贖生命。
【小題１】通過上下文可知“retrieve”有“get sth back”之意。在第三段“...have recovered millions of dollars of U．S. Naval torpedoes...”中“recover”剛好符合此意。選B。
【小題２】見第二段�！皌o save lives of people”是執(zhí)行該計劃產(chǎn)生的結(jié)果，而非目的。選B�！拘☆}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”可知美國海軍秘密進(jìn)行該計劃大約30年。選B。
【小題４】主旨題：從文章的第一二段的內(nèi)容可知：美國在訓(xùn)練海豚和海獅充當(dāng)高效反恐先鋒。選Ｃ。
考點：考查科普類短文
點評：文章內(nèi)容有些難度，但題目主要考查了細(xì)節(jié)題，只要帶著題目到文中找到關(guān)鍵的句子，就可以得到答案，同時要注重綜合語言能力的運用，結(jié)合語境，做出準(zhǔn)確的判斷。