如图所示是甲、乙两位同学使用厚刻度尺测量物体长度时的情况，其中 ______是正

化学物危险度评价的内容不包括（）

A.危害认定

B.剂量-反应关系评价

C.接触评定

D.危险度特征分析

E.卫生标准制订

2012年以来人民币对美元汇率中间价持续走高。3月22日为6.3900，10月8日为6.3426，走高474个基点。据此回答题。

小题1:这一变化表明 (      )

A．人民币汇率跌落，美元贬值

B．美元汇率跌落，人民币升值

C．人民币汇率升高，美元升值

D．美元汇率升高,人民币升值小题2:下列观点与材料中的变化相符合的是 ( )

①提高了我国对美国企业投资的吸引力 ②有利于中国居民赴美旅游

③不利于中国商品对美国出口         ④用同样数量人民币能进口更多的美国商品

A．①③④

B．①②④

C．①②③

D．②③④

阅读理解。

     Howling is a behavior commonly observed among a wolf pack. As pack animals, wolves work together

to hunt and rely on howling as an important means of communication among each other. There are different

explanations of a wolf's howl and it appears that there may be more to discover.

     One theory is that wolves howl to bond better together. It's almost as if howling together helps the pack

stay together. Perhaps something is similar to people feeling a sense of involvement with each other when

singing a song together. But this theory may be wrong, explains Fred H. Harington, a professor who studies

wolf behavior.

     Indeed, there have been times when wolves have been seen one moment howling in a chorus, and the

next, quarreling among each other. It appears that usually the lowest-ranking members of the pack may

actually be "punished" for joining in the chorus at times. So is howling a way to strengthen a social bond or

just a way to reconfirm status among its members? - Why do wolves howl for sure?

     What is clear, however, is that howling is often used among packmates to locate each other. Hunting

grounds are distant and it happens that wolves may separate from one another at times. When this happens,

howling appears to be an excellent means of gathering.

     Howling, interestingly, is a contagious behavior. When one wolf starts to howl, very likely others will

follow. This is often seen to occur in the morning, as if wolves were doing some sort of "roll call" where

wolves all howl together to report their presence.

1. What the possible similarity between wolves' howling together and human's singing in chorus?

A. The act of calling each other.

B. the sense of accomplishment.

C. The act of hunting for something.

D. The sense of belonging to a group.

2. Why does Harrington think the "social bond" theory may be wrong?

A. Wolves separate from each other after howling.

B. Wolves tend to protect their hunting grounds.

C. Wolves sometimes have quarrels after howling together.

D. Wolves of low rank are encouraged to join in the chorus.

3. Researchers are sure that wolves often howl to _____.

A. show their ranks

B. find their companions

C. report the missing ones

D. express their loneliness

4. "Howling… is a contagious behavior" (in the last paragraph) means _____.

A. howling is a signal for hunting

B. howling is a way of communication

C. howling often occurs in the morning

D. howling spreads from one to another

据官方报道，格陵兰的自杀率(每千人的自杀人数)1987年比1960年高17倍。因为格陵兰从1960年到1987年，由狩猎和捕鱼社会变成一个工业社会，自杀率的巨大变化一定是这一社会变化的结果。 下列哪项如果为真，则对以上结论提出最严重的质疑( )

A．从狩猎和捕鱼社会变成工业社会，有时会引起重大犯罪率的变化

B．在狩猎的捕鱼社会里也有相当一部分社会成员选择自杀

C．根据官方的记录，1987年格陵兰自杀者数量确有一定程度的增长

D．1987年，大多数发生在格陵兰的自杀案例被官方记录报道，而1960年大多数自杀案例并未记录在案

以下药材中，药用部位不是动物的干燥整体的是（）

A．蜈蚣

B．土鳖虫

C．斑蝥

D．海螵蛸

E．全蝎