答案：A
A.at one time 一度,从前
B.at a time 依次
C.at times 有时
D.at the same time 同时
Later,these rocks proved that___in the distant past the Antarctic was covered by plants.
Later,these rocks proved that___in the distant past the Antarctic was covered by plants.
A.at one time B.at a time C.at times D.at the same time
A.at one time B.at a time C.at times D.at the same time
英语人气：125 ℃时间：2020-05-27 06:35:52
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