[单项选择]As to the greenhouse effect, the author ______. A. shares the same view with the scientists B. is uncertain of its occurrence C. rejects it as being ungrounded D. thinks that it will destroy the world soon
参考答案:B 答案解析:解析:由第一段最后一句“If this view is correct ...”可知作者只是引述这种现象,并不确定其正确性。