6. A. It always is B. It’s always C. It never is D. It’s never
5. A. perhaps B. maybe C. sometimes D. must
4. A. end B. water C. people D. animals
3. A. because B. that C. as D. enough
2. A. for B. and C. else D. but
1. A. go B. walk C. cross D. reach
15. D。固定短语stop sb. from doing,本句意为“阻止交通事故的发生。
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Bob: In a book I was reading, some men had to 1 a desert. There was nothing 2 sand they could see. It was so large 3 it seemed to them that it had almost no 4 .
Tom: It 5 be very hot. Bob: That’s right. 6 hot in a desert. But they rested 7 the day and traveled at night. .
Tom: But there’re no trees or anything like that 8 you to get cool.
Bob: 9 . But they had some tents (帐篷). They 10 when they were going to rest.
Tom: That was a lot of trouble, 11 ?
Bob: Yes. Every night 12 they 13 on the next part of the trip, they had to take the tents 14 . Then they had to put them on their camels. That’s the 15 way you can travel in a desert.
14. B。建议人们应经常使用立交桥,其它选项在意思上都不对。
13. A。两者都(老年人和年轻人)。
12. D。指过去没有立交桥时,既有人又有车辆过马路,with“伴有”,“带有”。