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Shenews programs
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but sitcoms are for her to watch.
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。
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。
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