选择题:16.The phone was ringing but ________ she got indo

题目内容:
16.
The phone was ringing but ________ she got indoors, it had  stopped.
(A) at the time
(B) for a time
(C) by the time
(D) within the time
参考答案:

10.实际生产中,金属冷却时( );(A)理论结晶温度低于实际结晶温度(B)理论结晶温度等于实际结晶

10.实际生产中,金属冷却时( );(A)理论结晶温度低于实际结晶温度(B)理论结晶温度等于实际结晶温度(C)理论结晶温度高于实际结晶温度(D)

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