问题
选择题
It's no longer a question now _____ man can land on the moon.
A.when
B.that
C.whether
D.how
答案
答案:B
考查主语从句。本题的it是形式主语,真正的主语是that man can land on the moon,that引导起这个主语从句,在句中起连接作用,没有任何实际意义。
It's no longer a question now _____ man can land on the moon.
A.when
B.that
C.whether
D.how
答案:B
考查主语从句。本题的it是形式主语,真正的主语是that man can land on the moon,that引导起这个主语从句,在句中起连接作用,没有任何实际意义。