问题
选择题
Scientists have many theories about how the universe ___ into being.
A.came
B.was coming
C.had come
D.would come
答案
答案:A
考查时态的用法。宇宙是如何形成的,因为宇宙的形成这个动作已经发生,所以用一般过去时来表示已经发生的动作。
Scientists have many theories about how the universe ___ into being.
A.came
B.was coming
C.had come
D.would come
答案:A
考查时态的用法。宇宙是如何形成的,因为宇宙的形成这个动作已经发生,所以用一般过去时来表示已经发生的动作。