The first two stages in the development of civilized man were probably the invention of primitive weapons and the discovery of fire, although nobody knows exactly when he acquired the use of the latter.
41)______Animals have a few cries that serve as signals, but even the highest apes have not been found able to pronounce words, even with the most intensive professional instruction. The superior brain of man is apparently a necessity for the mastering of speech. When man became sufficiently intelligent, we must suppose that he gradually increased the number of cries for different purposes. It was a great day when he discovered that speech could be used for narrative. There are those who think that in this respect picture language preceded oral language. A man could draw a picture on the wall of his cave to show in which direction he had gone, or what prey he hoped to catch. 42)______
Two important stages came not so long before the dawn of written history. The fir
The famous banker, Ellington was a New York office’s______. | /r/n /r/n 1 /r/n | /r/n |
His secretary knew his______. | /r/n /r/n 2 /r/n | /r/n |
Ellington
[单选题]钢轨探伤仪测距为纵波声程250mm，用70°探头发现钢轨内有一斜裂纹回波3.2～4.4格，则该裂纹距探测面的垂直距离约为（ ）。
A.75mm B.41mm C.27mm D.15mm [多项选择]微观层面的金融创新大致可以分为（）。
A. 信用创造型创新 B. 风险转移型创新 C. 增强流动性创新 D. 股权创造型创新 E. 金融市场的创新 [单选题]电力系统发生两相短路时，两相短路电流是故障支路负序电流的（）。
A.√3倍 B.3倍 C.1倍 D.√3 [单项选择]按照人的能量大小进行标准分级所形成的序列是（）。
A. 动态原则 B. 动力原则 C. 行为原则 D. 弹性原则 E. 能级原则 [填空题] Let’’s look (36)______history to an earlier way of life. At one time, children didn’’t have to learn any more than how to cope with their (37)______environment. They had to learn to be careful about around moving objects, to draw back when they got too close to something (38)______. They didn’’t need any special schools to learn these things, other than the school of experience. (39)______the school is necessary for them to learn how to (40)______. Because their parents taught them all they need to know about how to hunt and to (41)______. But as the society became more (42)______, people (43)______ more on others who were living (44)____________. So, it became important for children to learn to read and write. When money was created, they needed to learn to (45)____________. Children have to know these things in order to (46)____________this new expanded environment. Because such skills could not be learned simply through first-hand experience, schools became necessary, so that ch
[单项选择]脊柱总共有（）个椎骨组成。
A. 23 B. 24 C. 25 [判断题]使用时间在1个月以下的临时用电线路,电线埋地深度不应小于1米。
A.正确 B.错误 [单项选择]医疗机构的医务人员违反《献血法》规定，将不符合国家规定标准的血液用于患者的，由县级以上卫生行政部门给予的行政处罚是
A. 警告 B. 罚款 C. 吊销《医疗机构执业许可证》 D. 责令改正 E. 限期整顿 [判断题]发生石击玻璃造成车窗破损、旅客伤害时应急处置中，列车长及时拍发电报 。
A.正确 B.错误 我来回答: 提交
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