The scientist does not study nature ________ it is useful to do so. He studies it because he takes p...
2022-10-22 10:22:20 202次 2014-2015学年江苏南京盐城两市高三一模考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The scientist does not study nature ________ it is useful to do so. He studies it because he takes pleasure in it.
A． until B． though
C． because D． Unless
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