2. 外语
  3. The passage mainly discusses the factors leading to plastic bag pollution.. The so-called environmentally friendless bags are m

The passage mainly discusses the factors leading to plastic bag pollution.. The so-called environmentally friendless bags are m

admin2009-09-12  50
问题 The passage mainly discusses the factors leading to plastic bag pollution..
The so-called environmentally friendless bags are much quicker to break down, but will release a great deal of ______.
选项
答案greenhouse gases
解析 参见“Greenhouse Gases”部分第一段。
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大学英语四级

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