问题
选择题
—I do believe the scientific explanation that when a tomb is opened, the fresh air disturbs the viruses inside it. What about you?
—So do I. If _______ in, the disturbed viruses may cause illness or even death.
A.breathing
B.breathed
C.being breathed
D.to breathe
答案
答案:B
考查条件状语从句的省略。当状语从句的主语和主句主语一致,并含有be动词时,从句的主语和be动词可以省略。If _______ in, the disturbed viruses may cause illness or even death.补充完整应是:if the disturbed viruses are breathed in, the disturbed viruses may cause illness or even death.所以选B。