part in意为“参加（某些活动）”。故选A。
10.C [解析] 考查交际用语。由后一句“Just go ahead（你继续）”可知,语境中不介意把电视声音调大一些。故用of course not“当然不会”来表达。故选C。
Ⅱ.【主旨大意】本文是一篇说明文。健康离不开运动,快走已经成为一种十分流行的运动方式,既简单又有效。
1.C [解析] 细节理解题。根据第一段第二句“…many people walk more than 5,000 steps a day.”可知,在中国,许多人每天行走5000多步。故选C。
2.A [解析] 细节理解题。根据第一段最后一句“…over 23% choose running”可知,超过23%的中国人选择跑步作为他们最喜欢的锻炼方式。故选A。
3.B [解析] 细节理解题。根据第二段第二句“…many people would rather do exercise in nature”可知,许多人更喜欢在大自然中做锻炼。故选B。
4.B [解析] 推理判断题。根据第二段第一句“Fast walking and running are easy, cost little and work well”可知,快走非常容易,并且花费少、效果好。故选B。 5.C
Ⅲ.1—5 DCBFA
Ⅳ.A.1.health 2.weak 3.private 4.headache 5.lead B.6.changed 7.part 8.those 9.healthy 10.study Ⅴ.1.Let me take your temperature. 2.I have been ill for about three days.
3.Now I get exercise by taking him for a walk every day. 4.Do you mind if I borrow your book?
5.I haven’t done much exercise since I got my computer last year.
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