变压器的扇形温度计是反映变压器（）的 A.绕组温度 B.铁芯温度 C.上层油温 D.

轰轰烈烈的国民大革命失败后，中 * * 党人举起武装反抗国民党白色恐怖斗争的大旗。下列表述适合当时时势的是

①迅速组织工人阶级进行暴动，走俄国十月革命道路

②发动南昌起义、秋收起义、广州起义等一系列起义

③迅速争取一省、数省的革命胜利，迎接全国革命高潮的到来

④毛 * * 率秋收起义队伍奔赴井冈山，创建了中国第一块农村革命根据地[ ]

A．①②④

B．②④

C．①③

D．①②③④

下图为“北半球某地的气压状况示意图”,由热力作用引起,读图完成下列问题。（每空2分，共10分）

（1）用“→”完成图中的热力环流。

（2）图中近地面_________________点是高压区，_________________点是低压区。

（3）近地面B点吹_________________风。

（4）A、B、C三点都位于同一纬度上，此时若地球位于远日点，则A点处在_________________（陆地或海洋）。

工程量清单是由( )提供的文件。

A．招标人

B．工程造价咨询机构

C．监理工程师

D．政府部门

_____ a great party! _____ delicious the food is! [ ]

A. What; How

B. How, How

C. What, What

D. How, What

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.

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.