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健康危险度评价是按一定的准则对暴露于某一特定环境条件下，该环境中的有毒有害物质或因素可能引起个人和群体产生某些有害健康效应的概率进行定性、定量评价。

危险度特征分析对有阀化学物评价指标是（）。

A.人群年超额病例数

B.人均患癌年超额危险度

C.人群超额患癌病例数

D.人群终生超额危险度

E.人群终生患癌超额危险度

F.人群年超额危险度

答案

参考答案：A, D, F

完形填空
Every school has its own rules. Then I will talk       one of the rules. At some schools, the students      to wear uniforms on school days. But many students don’t       to wear their school uniforms.       think the uniforms are the ugliest (最丑的)       in the world. But the schools       allow (允许) students to wear      own clothes at school. So some students     cartoons or some famous singers on their       . They think it is very       that everyone wears the same. It       very unfair(不公平的) that teachers and students wear clothes      . But most of the students      the rules. What do you think       it? Do you       your school uniform?
小题1:
A．toB．aboutC．withD．in
小题2:
A．hasB．mustC．shouldD．have
小题3:
A．thinkB．haveC．likeD．dislike
小题4:
A．TheyB．WeC．HeD．She
小题5:
A．clothesB．shirtC．skirtD．cloth
小题6:
A．notB．don’tC．noD．doesn’t
小题7:
A．theirB．theyC．themD．themselves
小题8:
A．readB．cutC．seeD．draw
小题9:
A．school bagsB．booksC．uniformsD．desks
小题10:
A．boredB．boringC．interestingD．interested
小题11:
A．beB．isC．areD．am
小题12:
A．sameB．differentlyC．differentD．difference
小题13:
A．followB．agreeC．listenD．break
小题14:
A．ofB．withC．byD．for
小题15:
A．likeB．makeC．washD．put
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单项选择题

纸张在通常情况下的含水量为（）左右。

A.2%

B.4%

C.6%

D.8%
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