2. 外语
  3. The passage gives an overview of the effects of global warming on the United States. The United States is the world’s No. 1 emi

The passage gives an overview of the effects of global warming on the United States. The United States is the world’s No. 1 emi

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问题 The passage gives an overview of the effects of global warming on the United States.
The United States is the world’s No. 1 emitter of greenhouse gases.
选项 A、Y
B、N
C、NG
答案C
解析 The United States is the world’s No. 1 emitter of greenhouse gases．词汇线索为No. 1, gas，定位到小标题Solutions下面首句，但该句仅列出美国排放的气体在世界上占的比例，并未说明是否是最多，但也不能排除这种可能，故该题答案应该为NG。
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大学英语四级

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