26.It is implied in the passage that________.
A.governments and companies had different opinions about the safety of products
B.governments paid little attention to the safety of products
C.government officials often did not listen to scientists
D.in the past no safety laws were introduced by governments
27.Some years ago safety rules________.
A.were put forward due to scientists’ recommendations
B.came into being as a result of the workers’ demands
C.were introduced because quite a number of people were killed or seriously injured
D.were effective enough to protect workers and customers
28.The special departments protect customers and workers in many ways EXCEPT by________.
A.testing new products
B.controlling the sale of products
C.designing new products
D.inspecting work places
课时作业(十九)
Ⅰ.1.C 本题中lack为及物动词,此处是一种省略形式,相当于though they lacked money。
2.D 表示与现在事实相反的虚拟语气。
3.C date back to(date from) 从……时就有,回溯到;look around (=look round) 到处寻找,察看;think back to 回忆,想起;think over 考虑。根据句意选C。
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