在25℃时，物质的浓度相等的NH4Cl、CH3COONH4、NH4HSO4的溶液

基底节性失语()
命名性失语()
经皮质运动性失语()
完全性失语()
Wernicke失语()

A．分水岭区失语综合征 

B．皮质下失语综合征 

C．轻度失语 

D．外侧裂周失语综合征 

E．重度失语 

零件加工过程一般分为（）三个阶段。

王成八岁丧父，其母于1980年与农民许某结婚。当时王成八岁半，因为许某没有子女，王成随母与许某一起生活至1994年参加工作，现每月收入800余元。1996年3月，母亲下岗故与许某离婚后，互不来往。1999年以来，许某因丧失劳动能力，多次要求王成给予生活帮助，均遭拒绝。现许某向法院起诉，要求王某每月给付100元赡养费。在调解中，王辨称：“我母亲早已与许某离婚，我根本没有赡养他的义务”。

王成是否具有赡养许某的法律义务？为什么？

某一悬臂水池，壁高H=1.5m，采用MU10烧结普通砖和M7.5水泥砂浆砌筑，如图所示。水的荷载分项系数取1.2。砌体施工质量控制等级为B级，结构安全等级为二级。

试确定池壁底部的受剪承载力验算公式（V≤bzf_v），其左右端项，与下列何组数值最为接近（）

A．13.5kN/m＜46.3kN/m

B．11.3kN/m＜46.3kN/m

C．13.5kN/m＜57.9kN/m

D．11.3kN/m＜57.9kN/m

Man first appeared on earth about 2 million years ago. Then he was little more than an animal; but early man had a big advantage over the animals. He had in his brain special groups of nerve cells, not present in animals, that enabled him to invent a language and use it to communicate with his fellow men. 46) This ability to speak was of great value because it allowed men to share ideas, and to plan together, so that tasks impossible for a single person could be successfully undertaken by intelligent team-work. Speech also enabled ideas to be passed on from generation to generation so that the stock of human knowledge slowly increased.
It was this special ability that put men far ahead of other living creatures in the struggle for existence. 47) He mastered darkness first with dim lights and later with brighter and brighter lamps, until he can now make for himself so dazzling a light with an arc lamp that, like the sun, it is too p for his naked eyes.
48) Man found that his own muscles were too weak for the work which he wanted to do; he explored many other forms of power until now he has his hands on the ultimate source of physical energy, the nuclear power. From man’s earliest days the flight of birds has raised his wonder and desire. Why should he not fly as they did Then he began to experiment. At last he learnt how to make the right machines to carry him through the air. Now he can fly faster than sound. Already he has plans for conquering space, and a series of experiments has been completed. 49) It will not be long now before man takes a giant step away from his planet and visits the moon, learning what it is like to have no weight to his body, no upward direction and no downward.
Man, always a wanderer, has to overcome the difficulty of adapting himself to different climates. 50) Fortunately, in spite of having no thick skin or warm fur to protect him, he is peculiarly p compared with other living creatures, most of whom are unable to live far outside the region that suits them best.