单项选择题

I think you've got to the point ______ a change is needed, otherwise you'll fail.

A. when
B. that
C. where
D. which
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—When did it begin to snow —It started ______ the night.
A. during
B. by
C. from
D. at
单项选择题
1918年出版的教育史上第一本课程理论专著，标志着课程作为专门研究领域的诞生，其作者是( )。
A．斯宾塞
B．博比特
C．拉尔夫·泰勒
D．施瓦布
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