搜题请搜索小程序“爱下问搜题”
问题 多项选择题

关于剂量－反应关系评价，正确的是（）。

A.是定量危险度评价的第一步

B.确定特定接触剂量下评价人群危险度的基准值

C.主要是基于人群流行病学的结果

D.主要内容为建立由高剂量向低剂量、由动物效应向人的危险度外推的方法

E.可分为阈值化学毒物和无阈值化学毒物的剂量－反应关系评价

答案

参考答案：A, B, D, E

多项选择题

急性弥漫性毛细血管内增生性肾小球肾炎病人尿的改变是（）

A.管型尿

B.脓尿

C.血尿

D.蛋白尿

E.少尿
查看答案
单项选择题

Ban the Band

Every year, our school has a dance for all the students. It’s a little funny seeing friends in clean shoes and trousers or colorful (1) , instead of the usual school uniform.

Most of us think the dance is great (2) even the teachers enjoy being there. (3) , two weeks ago someone said that there would be no (4) band this year— only CDs. "I don’t (5) it!" Amy cried out during the lunch break.

"Someone said the school couldn’t (6) a band, and they think it’s too noisy anyway, "added Daniel.

"Well, I don’t think it’s (7) enough without a band!" declared Angela, "and I’m going to see what can be done. "

Angela was as good as her (8) . In the afternoon she went to see the school headmaster who agreed to give the (9) some more thought. And he suggested that one (10) for having a band was to increase the price of each ticket from MYM5 to MYM10. Angela had to (11) out whether the students would like to do that."I need all of you to help me, " she (12) to our group before school the next day. "Mr. Berry gave me a list of all the names, and suggested we ask each one their (13) about the band and the extra cost. " (14) the day we asked around as Angela suggested, and wrote down people’s feelings about the band and the cost. We were amazed how much (15) there was for the band and everyone agreed to pay the extra MYMS."I’m surprised, " smiled Mr. Berry, when we gave him the (16) . "I really thought that only a few people (17) their band and that the cost would be too high. OK. Angela, your next (18) is to find a good band and line them up for the dance. "Angela was all smiles and (19) the news to Amy and Daniel. "You’re (20) , " smiled Daniel to Angela as he thought how close they came to having a less than perfect dance.

11（）

A.call 

B.find 

C.carry 

D.point
查看答案