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【简答题】
乡下人在( )开一个( ),装一个( ),叫作“天窗”。
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反馈参考答案：
举一反三
【简答题】Read the text (P114, the second paragraph), and answer the question: what are the main portions of an ion exchange equipment?
【简答题】A school bus is one that is used to take children to and from school. In the USA, about 450,000 school buses take more than 25 million children to and from school. The yellow school bus is a US icon (...
【单选题】光纤通信是将记录的声音的电信号转变成光信号，通过光纤把信号传给对方，最后把光信号转变成电信号完成通话。高分子光纤的包层厚度为（）
A.
10 μ m
B.
20 μ m
C.
30 μ m
D.
40 μ m
【简答题】A Bus Becomes a School for Migrant Children.doc
【单选题】In The Little Bus Who Liked Home Best, a municipal bus becomes envious of the _____________________ buses on the highway.
A.
great silver big
B.
great big silver
C.
silver great big
【简答题】磁力线上某点的切线方向就是该点磁场的方向。()
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