短周期金属元素甲～戊在元素周期表中的相对位置如右表所示，下面判断正确的是 A．

对肝性脑病患者，错误的护理措施是（）。

A.低热量饮食

B.暂停蛋白质摄入

C.清除肠内积血

D.米醋加生理盐水灌肠

E.口服50%硫酸镁溶液导泻

“嫦娥工程”是我国迈出航天深空探测第一步的重大举措，实现月球探测将是我国航天深空探测零的突破．已知月球半径为R，万有引力常量为G．若宇航员随登月飞船登陆月球后，在月球表面某处以速度v₀竖直向上抛出一个小球，经过时间t，小球落回抛出点．根据以上所给出的条件，求：

（1）月球的质量M；

（2）若飞船绕月球的运动近似看做匀速圆周运动，飞船绕月球运动的最小周期T_min？

The famous American gorilla（大猩猩） expert Diane Fossey had a completely new way to study gorillas — she pretended to be one of them. She copied their actions and way of life — eating plants and getting down on her hands and knees to walk the way a gorilla does. It was a new relationship.

Diane Fossey was murdered in Rwanda in 1985 and her story was made into the popular film Gorillas in the Mist. It was a long way from King Kong, which is about a gorilla as a monster （a frightening animal）, and helped to show a new idea: the real monster is man, while the gorilla is to be admired.

Today there are thought to be around 48,000 lowland gorillas and maybe 400—450 mountain gorillas in the wild. From the Congo in West Africa, to Rwanda and Uganda further east, they are endangered by hunting and by the cutting down of their forest homes.

Some time ago, I found in my letterbox a little magazine from the World Wide Fund for Nature. It had two photos side by side. One was of a young gorilla. “This is a species of mammal（哺乳类动物）,” said the words below it. “It is being destroyed by man. We must save it for our own good.” The other photo showed a human baby. The words also read, “This is a species of mammal,” but then went on: “It is the most destructive（破坏性的） on earth. We must retrain it for its own good.”

56．The text mainly talks about _____.

A. Diane Fossey              B. the gorillas in Rwanda

C. the protection of the gorillas     D. the film Gorillas in the Mist

57．We can learn from the text that _____.

A. Gorillas in the mist was based Fossey’s experiences

B. Lowland gorillas live longer than mountain gorillas

C. King Kong showed us that a gorilla is admirable

D. Diane Fossey was murdered by a gorilla

58． What message can we get from the two photos in the magazine?

A. Gorillas are man’s close friends.  

B. Both man and the gorilla need to be saved.

C. Young gorillas are as lovely as human babies.

D. Man should live peacefully with the gorilla.

“不可能所有的错误都能避免。”以下哪项断定的含义与该断定最为类似（）

A．可能有的错误不能避免

B．可能所有的错误都不能避免

C．可能有的错误能避免

D． 必然有的错误不能避免

当前国内企业所面临的外部环境，不包括下列哪一项？（）

A.经营方式全球化

B.管理手段信息化

C.核心竞争力知识化

D.企业资源多元化