Why did Ms. A tell the author her family background？
A．She wanted to get donation from the author.
B．She just wanted someone to listen to her.
C．She asked the author to look after her children.
D．She intended to make clear of her illness.
请帮忙给出正确答案和分析，谢谢！
平均每日可以摄入某营养素的最高量是
A.EAR
B.RNI
C.DRI
D.AI
E.UL
请帮忙给出正确答案和分析，谢谢！
一名男工长期从事汞作业，有神经衰弱症状和尿汞升高等症状，已诊断为轻度汞吸收，较早和较好的处理原则是
A、及时调离汞作业场所继续观察
B、驱汞治疗
C、从事轻度汞作业工作
D、休息
E、住院治疗
请帮忙给出正确答案和分析，谢谢！
What does "His parents are dead against the trip" mean？
A．His parents are dead because of me trip.
B．His parents are quite in opposition to me trip.
C．His parents are hardly against the trip.
D．His parents have a very hard time during me trip.
请帮忙给出正确答案和分析，谢谢！
The caller warned that the bomb would explode when the plane______.
A．took off from New York
B．arrived at Moscow
C．left for Iceland
D．reached Voronezh
请帮忙给出正确答案和分析，谢谢！
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