证券发行市场是由证券发行人、证券投资者和( )三部分组成。A．证券公司 B．证券经

Dogs can know the meaning of a human perspective, say researchers.

Dogs are more capable of understanding situations from a human's point of view than has previously been recognized, according to researchers.

They found dogs were four times more likely to steal food they had been forbidden, when lights were turned off so humans in the room could not see.

This suggested the dogs were able to alter their behavior when they knew their owners' perspective had changed.

The study, published in Animal Cognition, conducted tests on eighty-four dogs.

The experiments had been trying to find whether dogs could make their behavior suitable to react to the changed circumstances of their human owners. It wanted to see if dogs had a "flexible understanding" that could show they understood the viewpoint of a human.

It found that when the lights were turned off, dogs in a room with their human owners were much more likely to disobey and steal forbidden food.

The study says it is "unlikely that the dogs simply forgot that the human was in the room" when there was no light. Instead it seems as though the dogs were able to differentiate between when the human was unable or able to see them.

Juliane Kaminski carried out the research into how dogs are influenced by human circumstances.

Dr Juliane Kaminski, from the University of Portsmouth's psychology department, said the study was "incredible because it implies dogs understand the human can't see them, meaning they might understand the human perspective".

Previous studies have suggested that although humans might think that they can recognize different expressions on their dogs' faces, this is often inaccurate and a projection of human emotions.

“Humans constantly attribute(归属) certain qualities and emotions to other living things. We know that our own dog is clever or sensitive, but that's us thinking, not them,” said Dr Kaminski.

“These results suggest humans might be right, where dogs are concerned, but we still can't be completely sure if the results mean dogs have a truly flexible understanding of the mind and others' minds. It has always been assumed only humans had this ability.

小题1:According to the passage, which of the following is TRUE?

A．The researchers made the test on dogs in eighty-four countries.

B．Dogs always obey and don’t steal forbidden food.

C．Dogs may adapt their behavior in response to the changed circumstances.

D．The research is carried out to find out how dogs are influenced by light.小题2:Which of the following can best serve as the title of the passage?

A．Dogs---Our Loyal Companions Understand Us Most.

B．Dogs Are Our Best Friends.

C．Dogs Can Understand Us In a Way, Researchers Say.

D．Dogs Have Certain Qualities and Emotions of Human Beings, Researchers Say.小题3:Where can we probably read this kind of articles?

A．Textbooks.

B．Advertisements.

C．Instructions.

D．Magazines.小题4:This passage can be classified as     .

A．an argumentative writing

B．a feature story

C．a dog show review

D．a research result

急性和严重型再障的治疗正确的是

A．HLA配型相合的同种异基因骨髓移植

B．抗胸腺细胞球蛋白15mg/(kg·加氢化可的松同时静脉点滴，疗程5天

C．抗淋巴细胞球蛋白15mg/(kg·加地塞米松同时静脉点滴，疗程5天

D．抗胸腺细胞球蛋白加地塞米松同时静脉点滴，疗程5天

E．环孢菌素A5～10mg/(kg·口服，需要长期维持治疗

依据《安全评价机构管理规定》的规定，下列有关安全评价机构从事的活动中正确的是( )。

A．安全评价机构开展安全评价业务活动时，应当依法与委托方签订安全评价技术服务合同，明确评价对象、评价范围以及双方的权利、义务和责任
B．一个安全评价机构可以同时承接某一建设项目的安全预评价和安全验收评价工作
C．安全评价机构从事安全评价活动的收费，双方可以通过合同协商确定，行业自律标准可作为参考
D．安全评价机构及其从业人员可转包安全评价项目

“黄金是一切商品中最宝贵的，黄金是财富，谁占有了它，谁就能获得他在世上所需的一切。”在这一口号的推动下，欧洲出现了（）

A.文艺复兴运动

B.开辟新航路的活动

C.法国资产阶级革命

D.英国 * * 运动

下列说法正确的是（）。

A.二级耐火等级建筑内采用不燃材料的吊顶，其耐火极限不限

B.三级耐火等级的医疗建筑、中小学校的教学建筑、老年人建筑及托儿所、幼儿园的儿童用房和儿童游乐厅等儿童活动场所的吊顶，应采用不燃材料

C.二、三级耐火等级建筑中门厅、走道的吊顶应采用不燃材料

D.建筑内预制钢筋混凝土构件的节点外露部位，应采取防火保护措施，且节点的耐火极限不应高于相应构件的耐火极限

E.当房间的建筑面积不大于100m2时，房间的隔墙可采用耐火极限不低于0.50h的难燃性墙体或耐火极限不低于0.20h的不燃性墙体