练习:
1 A measures B accidents C actions D collapses
2 A they B it C some D most
3 A with B over C at D in
4 A before B after C once D while
5 A together B behind C down D apart
6 A contacting B conducting C containing D considering
7 A controlled B spotted C repaired D changed
8 A technical B electronic C physical D chemical
9 A everything B something C nothing D anything
10 A weak B strong C tough D soft
11 A using B opening C turning D finishing
12 A laws B theories C tools D results
13 A air B electricity C light D sound
14 A aside B beside C inside D outside
15 A a part of B a pair of C a piece of D a lot of
答案与题解:
1. B 从第一句的The color often means danger 和...can be prevented所表达 的意思判断,accidents 是答案。因为存在 danger,就有可能出现 accidents。因为有了红 色预警信号,accidents 就有可能 prevented。
2. A 本题的测试点是代词。代词所要指代的词是 cars,它是复数,所以代词 they 是唯一 选择。
3. C construction sites 前面的介词要用 at。with, over 和 in 都不合适。
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