在整个工商业库存中很重要、占比重较大的是（） A.批发业 B.零售业 C.制

The more careful you are while writing a composition, ________.[ ]

A. you make the fewer mistakes  

B. the few mistakes would you make

C. the fewer mistakes you will make  

D. fewer mistakes will be made

我国基金信息披露制度体系可分为（）。

A.基金信息披露的自律性规则

B.基金信息披露的规范性文件

C.基金信息披露的部门规章

D.基金信息披露的国家法律

Human beings have a natural desire to explore the unknown. People with a strong interest in space like to say it is the last place left to explore. But scientists are warning that space exploration for long periods is not going to be easy. They say the human body is not designed to stay in space over an extended period.

The New York Times recently published a report about scientists who are preparing astronauts for a trip to the Moon. The newspaper said the scientists want to make sure that their crews return home in good health. But there are many problems to be solved before people are ready for long trips to the Moon, an asteroid or even the planet Mars.

Humans developed on a planet with a surface that is more than 70 percent water. Our bodies are also about 70 percent water. When there is no gravity that water moves up toward the head, raising pressure in the skull. Arms and legs grow weaker at what is called zero gravity because they no longer need to push against the force of gravity.

Five years ago, astronauts who spent weeks in space reported a change in their eyesight. These astronauts were members of the crew on the International Space Station. Research showed a change in the shape of their eyes. Normally-round eyeballs had become flat during time in space. The research also showed that the right eye was affected more than the left, and that men were more affected than women. Scientists could not find an explanation for the differences.

Bone loss was one of the problems first reported by astronauts returning to Earth after longer stays in space. So scientists designed exercise machines to use on the space station. Tests showed that the exercise equipment helped space travelers keep their bones almost as strong as when they left Earth.

There are other health issues for astronauts who spend a long time in space. They may have problems eating and sleeping. But the biggest health issue is exposure to radiation. On Earth, human beings are protected by the atmosphere and the planet's magnetic field. In outer space, there is no such protection.

小题1:What is the main idea of the passage？

A．Long periods in space will affect the health of astronauts.

B．Scientists are trying to find out how to protect astronauts.

C．Space is dangerous to human beings.

D．People shouldn’t explore space.小题2:What will happen to human bodies in space？

A．Arms and legs grow stronger at what is called zero gravity

B．Blood moves up toward the head.

C．Pressure in the skull will be raised.

D．All of the above.小题3:The following are problems mentioned in the passage Except________.

A．bone loss

B．loss of water

C．eyesight

D．exposure to radiation小题4:Why did scientists design exercise machines to use on the space station?

A．To make sure that their crews return home in good health.

B．To help astronauts keep their bones almost as strong as when they left Earth.

C．To help astronauts get ready for long trips to the Moon, an asteroid or even the planet Mars.

D．To let astronauts adapt to the environment of space.小题5:What is true according to the passage?

A．The biggest health issue is exposure to Sunshine.

B．Research showed a change in the size of their eyes.

C．The right eye was affected less than the left.

D．Men were more affected than women.

患者男，18岁，户外滑冰时，在冰面上朝右侧方摔倒，宿部着地。头偏向右侧，左手托右肘部来门诊就诊。体检：右上胸部肿胀、瘀瘫。右锁骨外侧有局限性压痛，可触及骨摩擦感。上胸部正位X线片示：右侧锁骨骨折。

下列关于锁骨骨折分类正确描述的是

A．锁骨外端骨折时，骨折远端向下移位，近端向上移位

B．锁骨外端骨折时，骨折远端向上移位，远端向下移位

C．锁骨中段骨折时，骨折远端向前、下移位，近端向后、上移位

D．锁骨中段骨折时，骨折远端向后、上移位，近端向前、下移位

E．锁骨中段骨折时，骨折远端向前、上移位，近端向后、下移位

F．锁骨中段骨折时，骨折远端向后、下移位，远端向前、上移位

有人建议在海河河道两侧铺设防渗膜，你是否赞同这种做法?并说明理由。