We find it hard to break free from ideas connected with living on the earth because

题库:综合类 类型:最佳选择题 时间:2017-07-03 03:15:27 免费下载:《单选题》Word试卷

We find it hard to break free from ideas connected with living on the earth because
A.it demands too great an effort for us to do so.
B.we are too familiar with the way things are to question the ideas.
C.we have proved that those ideas are correct.
D.we are so sure of ourselves that we never doubt anything on the earth.

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