A doctor for animals

3. The services of the dolphin were used by the

　　A. Government of California　　B. U.S. Army

　　C.  U.S. Navy　　　　　D. Scripps Institution of Oceanography

4. The article does not say that

　　A. the station was named Sealab II　B. the station's depth was 205 feet

　　C. ten men were in the underwater team　D. the men spent fifteen days at the station

5. For all his chores, the dolphin

　　A. wore a plastic harness　　B.   carried a waterproof tube

　　C. carried a line　　　　　　D.  carried tools

6. The signal for the dolphin's rescue chore was a

　　A.  shout　　B. bell　　C. buzzer　　D. whistle

7. The purpose of the line the dolphin took was to

　　A. save the aquanaut from drowning

　　B. lead the aquanaut back to the others

　　C. help the aquanaut to guide the dolphin

　　D. carry a light to the aquanaut

8. The author suggests that this modern example makes old tales about dolphins seem

　　A. more truth than fiction　　　　B. more fiction than truth

　　C. half truth and half fiction　　D. entirely fiction

参考答案：

　　1.  C　2. B　3. C　4.  D　5. A　6. C　7. B　8. A

探究活动（二）

Health

　　As regard health, I have nothing useful to say since I have little experience of illness. I eat and drink whatever I like, and sleep when I cannot keep awake. I never do anything whatever on the ground(实际上) that it is good for health, though in actual fact the things I like doing are mostly wholesome(有益健康的).

　　Psychologically(从心理方面) there are two dangers to be guarded against in old age. One of these is undue absorption(不适当的迷恋) in the past. It does not do to live in memories, in regrets for the good old days, or in sadness about friends who are dead. One's thoughts must be directed to the future, and to things about which there is something to be done. This is not always easy; one's own past is gradually increasing weight. It is easy to think to oneself that one's emotions used to be more vivid than they are, and one's mind more keen. If this is true it should be forgotten, and if it is forgotten it will probably not be true.

Saint Bernard dogs

　　The famous Saint Bernard dogs have saved many travelers lost in storms on the Alps.  The dogs' home is a travelers' shelter kept by Augustinian monks.  It stands at the highest point of the Great Saint Bernard Pass. For hundreds of years the pass has been used for travel between Switzerland and Italy.  The journey was often dangerous.

　　Snow and ice still block the pass for months. But the dogs are no longer needed to search it after a storm.  In 1964 the Great Saint Bernard Tunnel was opened for motor transport. The tunnel, only three and a half miles long, was the first alpine tunnel for road traffic.

　　Motorists are not the only users of the Great Saint Bernard Tunnel. Observers report that swallows now take the tunnel route.  It has become part of their spring flyway as they migrate north from Italy .

1. The Saint Bernard dogs became famous for

　　A. living in a shelter　　　　B. guiding climbers

　　C. saving travelers’ lives　 D. having shaggy coats

2. The dogs are kept by

　　A. the Swiss government　　　　B. Augustinian monks　

　　C. the Alpine Club of London　 D. Franciscan monks

3. The Great Saint Bernard Pass is a route between

　　A. France and Switzerland　　B.    Italy and Switzerland

　　C. Switzerland and Austria　 D. Switzerland and Germany

4. The Great Saint Bernard Tunnel has lessened the dangers of the route because

　　A. travelers no longer use the pass itself

　　B. the pass is now kept open all winter

　　C. dogs can patrol the tunnel more easily

　　D. All of the above

5. The selection states that this tunnel

　　A. was opened in 1964      B. is 3.5 miles long

　　C. was the first road tunnel through the Alps   D.    All of the above

6. The birds using the tunnel during their spring migration are

　　A.  cranes  B. sparrows  C. storks  D. swallows

7. Their use of the tunnel shows that they

　　A. can change a flyway for easier flights  B. like to follow cars

　　C. find flying over the Alps easy    D. intend to build nests in Switzerland

参考答案：

　　C　B　B　A　D　D　A

Teenagers need friends

　　Many teenagers feel that the most important people in th