2. 外语
  3. The passage mainly discusses the factors leading to plastic bag pollution.. The plastic bags were first produced in the 1970s a

The passage mainly discusses the factors leading to plastic bag pollution.. The plastic bags were first produced in the 1970s a

admin2009-09-12  62
问题 The passage mainly discusses the factors leading to plastic bag pollution..
The plastic bags were first produced in the 1970s and grew increasingly popular since the 1980s.
选项 A、Y
B、N
C、NG
答案C
解析 本文第一句提到塑料袋自20世纪80年代开始普及(．．．since they became popular in the 1980s)，但并未指出一定是在20世纪?0年代开始第一次生产。
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大学英语四级

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