13．A.Books B．Vegetables

　　C．Songs D．Letters

　　解析：这一段讲的都是饮食情况。"Vegetables are always welcomed and usually finished quickly."意为：蔬菜总是很受欢迎，而且通常很快就被吃完。

　　答案：B

　　C．tight D．big

　　解析：由下文描述可知极地科学家的生活空间不可能非常宽敞。

　　答案：C

　　C．small D．separate

　　解析：一些偏远野外宿营地使用单独的帐篷。

　　答案：D

　　16．A.caught up B．kept up

　　C．made up D．bothered

　　解析：独居不会被鼾声打扰。

　　答案：D

　　17．A.sports B．fun

　　C．work D．research

　　解析：这一段讲的是科学家们业余时间的安排。for fun "取乐"。

　　答案：B

　　18．A.women B．man

　　C．polar D．Russian

　　解析：编织通常为女性所为。

　　答案：A

　　19．A.skate B．run

　　C．climb D．fly

　　解析：他们可能被要求爬到海拔3,000多米的高处。

　　答案：C

　　20．A.state B．city

　　C．continent D．country

　　解析：南极洲是一个洲，因此选择名词continent与之相对应。

　　答案：C

　　Ⅵ.阅读理解

　　Riding a London subway, a person from other countries will notice one major difference: in London, people do not look at each other. In fact, eye contact is avoided at all times. That's not rudeness-people are just too busy to bother looking.

　　Busy doing what, you ask? Well, they're certainly not using the time for a moment of quiet thinking. Nor are they reading a book. New technology has replaced quiet habits. Today, the only acceptable form of book on the London Underground is an e­book.

Apple must earn a fortune from London commuters. Since the launch of the