航线飞行的安全高度,在平原地带应当高出航线两侧各25千米以内障碍物的最高标高()米。
A.200
B.300
C.400
D.600
参考答案:C
It was____back home after the experiment.[ ]
A. not until midnight did he go
B. until midnight that he didn't go
C. not until midnight that he went
D. until midnight when he didn't go
母——————辞書を 買って もらった。
A.を
B.が
C.から
D.へ