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问题 单项选择题 共用题干题

某厂金属冶炼车间部分工人逐渐发现神经衰弱，腹部隐痛，轻度贫血及某些化验指标异常，被确诊为某金属毒物慢性中毒

应考虑为（）

A.砷中毒

B.铝中毒

C.氟中毒

D.铅中毒

E.锰中毒

答案

参考答案：D

选择题

His father, a famous university professor, who is said to have started his teaching career in Australia, _____ in Nanjing University for more than twenty years.

A．has worked

B．worked

C．is working

D．will work
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选择题

（2013江苏南京）下列物质能在空气中燃烧，且产生大量白烟的是

A．木炭

B．甲烷

C．硫粉

D．红磷
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