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but sitcoms are for her to watch.

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Rewrite the sentences by using “it” after the model.Model: To get up early is a good habit. 改为It is a good habit to get up early.1.To swim across the English Channel (英吉利海峡) took her a lot of courage.

铝合金淬火后强度硬度没有达到峰值，塑性还有可能不降低反而增大。

A. 对
B. 错

一般来讲，经过淬火处理金属材料的强度和硬度会有所增加。

A. 对
B. 错

车站运转室设备巡视作业包括哪几项？

A. 数调操作台日常检修
B. 数调主机日常检修
C. 车站无线通信设备日常检修