可引起子宫节律性收缩
A．雌激素B．孕激素C．雄激素D．促卵泡素E．黄体生成素
参考答案：C
已知2a﹣b=5，那么2（2a﹣b）2﹣3（b﹣2a）+8=（ ）．
____ time going on, our school becomes greener and more beautiful.
A．Because of
B．Thanks to
C．As
D．With
