【单选题】It wasn’t long ___ the rain stopped and the moon came out again.
【简答题】铸工造型时严格禁止 型砂,以免迷住眼睛。
【单选题】In the first 24 hours after abandoning a vessel, water should be given only to personnel who are ______.
【单选题】A plane can't fly to the moon because ______.
A.
the moon is 240 kilometer far away
B.
we don't know where it is
C.
it can't fly without air
D.
there is no air on the moon
【单选题】保持健康的()是我们适应现代社会,迎接人生挑战,立志成才的必要件。