問題詳情
三、Cloze (6%) Since the first human __(36)__ on the moon, more and more people have wanted to fly intospace and gain knowledge about it. However, living on the space station is not easy. For example,when __(37)__, astronauts need to tie their sleeping bags to the walls to keep themselves fromfloating around. Also, astronauts have to recycle water every day because it is hard to get water inspace. __(38)__ a special machine, they make dirty water clean again—even water from therestroom!
【題組】36.
(A) landed
(B) was landing
(C) has landed
(D) had landed
參考答案
答案：A
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)