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[主观题]
Wilma became the first American woman to win three Olympic gold medals in track, ______mad
e her mother very proud.
[A] it
[B] that
[C] which
[D] this
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)
[A] it
[B] that
[C] which
[D] this
第2题
支架的移动速度取决于()
A.立柱的初撑力
B.泵站流量的大小
C.泵站的压力
D.千斤顶的最大推力
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