第22题: [单项选择]The professor was obliged to be in America for a lecture tour, and ______ unable to accept the honor of our invitation. A. undoubtedly B. subsequently C. consequently D. correspondingly 参考答案:C 答案解析:此处必须用一个表示因果关系的副词consequently,前面小句表示教授因为必须去美国做访学演讲,所以他不能接受我们的邀请。undoubtedly表示“不容怀疑”;subsequtently表示“随
第25题: [单项选择]普通人群甲减的患病率正确的是() A. 1%~10% B. 0.8%~1.0% C. 2%~10% D. 2%~5% E. 5%~10% 参考答案:B
第26题: [单项选择]A. The earth will get even cooler. B. No species will survive in fifty years. C. About 30% of all life forms will become extinct by 2050. D. No sun’s heat can reach the earth at all. 参考答案:C 答案解析:[听力原文] What will be expected to happen if people continue to produce greenhouse gases