题目内容：
Directions：In this section．you will hear 3 short passages．At the end of each passage，you will hear some questions．Both the passage and the questions will be spoken only once．After you hear a question,you must choose the best answer from the four choice marked[A]，[B],[C]and[D]．Then mark the corresponding letter on Answer Sheet2 with a single line through the center.注意：此部分试题请在答题卡2上作答。
Questions are based on the passage you have just heard．
请作答______ A．People can use nearly75 percent of i
B．People can use about 97 percent of i
C．People can use exactly 3 percent of i
D．People can use less than 3 percent of i
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答案解析：