单选题 {{I}} You will hear four dialogues or monologues. Before listening to each one, you will have 5 seconds to read each of the questions which accompany it. While listening, answer each question by choosing A, B, C or D. After listening, you will have 10 seconds to check your answer to each question. You will hear each piece ONLY ONCE.{{/I}}
{{I}}Questions 11 to 13 are based on the passage you have just heard.{{/I}}

【正确答案】 C

【答案解析】[听力原文]23-25 Bows and arrows, are one of man's oldest weapons. They gave early man an effective weapon to kill his enemies. The ordinary bow or short bow is used by nearly all early people. This bow had limited power and short range. However, man overcame these faults by learning to track his targets at a close range. The long bow was most likely discovered when someone found out that a five-foot piece of wood made a better bow than a three-foot piece. Hundreds of thousands of these bows were made and used for three hundred years. However, no one is known to survive today. We believe that a force of about one hundred pounds was needed to pull back the string all the way back on a long bow. For a long time the bow was just a bent stick and string. In fact, more changes have taken place in a bow in the past 25 years than in the last? centuries. Today, the bow is forceful. It is as exact as a gun. In addition, it requires little strength to draw the string. Modern bows also have precise aiming devices. In indoor contest, perfect scores from 40 yards are common. The invention of the bows itself ranks with discovery of fire and the wheel. It was a great-step-forward for man. [精解] 题干问：“当人类用一种短弓的时候为什么必须将目标锁定在一个近的范围内?”听力材料中说“This bow had limited power and short range．”即为了克服弓箭的有限力量和短的射程，才将目标锁定在一个近的范围内，所以本题的答案选 C。

【正确答案】 B

【答案解析】[精解] 题干问：“关于长弓这篇文章告诉了我们什么?”根据材料“The long bow was most likely discovered when someone found out that a five-foot piece of wood made a better bow than a three-foot piece．”的意思长弓应该比短弓的射程远，所以长弓应该比短弓发明的晚。