The space suits can be adjusted so that the team can reproduce different levels of gravity as if the...
2022-11-19 18:41:18 35次 2015届江西省高考人教版一轮课时作业必修1Unit4英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The space suits can be adjusted so that the team can reproduce different levels of gravity as if they________in space.
A．are B．has been
C．were D．had been
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