采用( )可以建造烟囱，水塔等构筑物，也可以建造高层住宅。
A．大模板
B．升板升层
C．隧道模
D．滑升模板
参考答案：D
胆绞痛发作时，最有效的止痛法是肌内注射()。
A．阿尼利定
B．苯巴比妥钠
C．吗啡及阿托品
D．阿托品及哌替啶
E．地西泮
If you write something and send it immediately by email, which you _______ later regret, there is no
chance for second thoughts. [ ]
A. would
B. should
C. have to
D. might
