Section B

　　Passage One

　　A guide dog is a dog especially trained to guide a blind person. Dogs chosen for such training must show good intelligence, physical fitness, and responsibility.

　　At the age of about fourteen months, a guide dog begins an intensive course that lasts from three to five months. It becomes accustomed to the leather harness and stiff leather handle it will wear when guiding its blind owner. The dog learns to watch traffic and to cross streets safely. It also learns to obey any command that might lead its owner into danger.

　　The most important part of the training course is a four�瞱eek program in which the guide dog and its future owner learn to work together. However, many blind people are unsuited by personality to work dogs. Only about a tenth of the blind find a guide dog useful.

　　Questions 26 to 28 are based on the passage you have just heard.

　　26. How long does the intensive course last?

　　【解析】[A]文中明確提到an intensive course that lasts from three to five months，因此正確答案為 [A]。

　　27.Which of the following is not a necessary skill guide dogs have to learn?

　　【解析】[D]答案依據是The dog learns to watch traffic and to cross streets safely. It also learns to obey any command that might lead its owner into danger. 從這兩句中可看出看家不屬于導盲犬訓練范圍內的技能。

　　28.How long does the most important training course last?

　　【解析】[C]最重要的訓練課程持續四周。文中明確指出了本題答案。The most important part of the training course is a four�瞱eek program，從此句中即可看出。

　　Passage Two

　　People dreams four to six times a night. They dream while they are in the REM stage of sleep, which means rapid eye movement stage in one's sleep. Sleepers go into the REM stage about every 90 minutes. The first dream of the night may last about ten minutes. Each dream gets a little longer. The last dream of the night may be an hour long.

　　People need their dreams. Younger children spend more time dreaming. Babies spend almost half of their sleep in the REM stage.