单项选择题

Questions 6 and 7 are based on the following news. At the end of the news item, you will be given 20 seconds’ to answer the questions.
Now listen to the news.
The search was complicated because ______.

A．they didn’t know where to search
B．the area is difficult to approach
C．the weather was rather bad
D．the mountain was too high

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单项选择题

单项选择题

Questions 6 and 7 are based on the following news. At the end of the news item, you will be given 20 seconds’ to answer the questions. Now listen to the news. The search was complicated because ______. 您的浏览器不支持 audio 元素。