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English and English Community 1 There is no doubt that English is a useful language. The people who speak English today make up the largest speech community in the world with the exception of speakers of Chinese. 2 A speech community is similar to other kinds of communities. The people who make up the community share a common language. Often they live side by side, as they do in a neighborhood (街坊), a village, or a city. More often they form. a whole country. National boundaries, however, are not always the same as the boundaries of a speech community. A speech community is any group of people who speak the same language no matter where they happen to live. 3 We may say that anyone who speaks English belongs to the English speech community. For convenience (方便), we may divide the speakers into two groups: one in which the speakers use English as their native language, the other in which the speakers learn English as a second language for the purpose of education, commerce,and so on. 4 Learning a second language extends one's vision and expands the mind. The history and literature of a second language record the real and fictional (虚构的) lives of people and their culture a knowledge of them adds to our ability to understand and to feel as they feel. Learning English as a second language provides another means of communication through which the window of the entire English speech community becomes a part of our heritage. 第 23 题 Paragraph 1______
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【单选题】第二产程中,何时开始保护会阴
A.
宫口全开时
B.
胎头拔露使会阴紧张时
C.
胎头着冠时
D.
胎头仰伸时
E.
胎肩娩出时
【单选题】第二产程中,何时开始保护会阴
A.
.宫口开全时
B.
.胎头拨露使会阴后联合紧张时
C.
.胎头着冠时
D.
.胎头仰伸时
【单选题】绕行停留车辆时其距离应不少于()。
A.
3m
B.
4m
C.
5m
D.
6m
【单选题】初产妇第二产程中,何时应开始保护会阴
A.
宫口开全时
B.
胎头仰伸时
C.
胎头着冠时
D.
胎头外旋转时
E.
胎头拨露使阴唇后联合紧张时
【单选题】第二产程中,何时开始保护会阴
A.
宫口开全时
B.
胎头拔露使会阴紧张时
C.
胎头着冠时
D.
胎头仰伸时
E.
胎肩娩出时
【简答题】同样形状的两块铁碳合金,其中一块是退火状态的15钢,一块是白口铸铁,用什么简便方法可迅速区分它们?
【简答题】将以下数修约为 4位有效数字: (5)0.0253651
【简答题】0253651修约为4位有效数字是__。
【判断题】人体上肢和下肢的重量,约占人体总重量一半
A.
正确
B.
错误
【简答题】将以下数修约为4位有效数字:0.0253541、0.0253561、0.0253550、0.0253650、0.0253651、0.0253549
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