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问题 单项选择题 A1型题

苯乙烯的毒作用表现（）。

A.对人眼及呼吸道黏膜刺激作用

B.对消化系统的损害

C.对中枢神经系统的损害

D.对血液及心脏的损害

E.对皮肤的损害

答案

参考答案：A

选择题

I have called the station and they told me the next train for Dalian ________at 3∶10.

A．will leave

B．left

C．has left

D．leaves
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选择题

______ the help of my teacher, I got ______ good education. [ ]

A．Under; a

B．With; a

C．Under; an

D．With; an

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