未知题型
We may learn from the passage that ______.A．people do not care about the removal of barriers between countriesB．people can not remove the obstacles made by themselvesC．man-made barriers are sometimes harder to overcome than natural onesD．barriers should be taken for granted as they always exist
C本题为推理判断题，提问的是我们可以从文中推断出下列哪项说法。根据文章的倒数第二、三句话“Naturalba......
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单项选择题 “勤”所指的表现是指()
未知题型 常用的平均指标有( )。
单项选择题 下面不是定向推广设置投放人群维度的是?()
