The global warming is more and more serious.for which human beings .A．are blamin
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The global warming is more and more serious，for which human beings ________.
| A．are blaming | B．are to blame |
| C．are going to blame | D．are to be blamed |
试题答案
B
解析be to blame用主动形式表示被动含义，表示“应该受责备”。句意为：全球变暖越来越严重，在这个问题上人类应该受到责备。