| Last year our country hosted the
Olympic Games. It is held{{U}} (41) {{/U}}.Many players{{U}} (42)
{{/U}}, all over the world take part in it. The old Olympic Games began
around the year 776BC in Greece and the modern games came from the{{U}} (43)
{{/U}}ones. The Olympic Games stopped for a long time. But people didn’t{{U}} (44) {{/U}}them. The first Olympic Games in modern times happened in 1896. They were held in Greece—the games were born in this{{U}} (45) {{/U}}. In the 1896 games, there were 311 players from just thirteen countries. After that, {{U}} (46) {{/U}}countries took part in the games. One of the great competitions{{U}} (47) {{/U}}not for a medal. It’s the competition among countries to hold the game. To hold the Olympic Games is a great prize{{U}} (48) {{ [单项选择]患者，男，31岁，活动时突感右胸部撕裂样痛，半小时后入院。查体：瘦长体型，大汗淋漓惊恐状，气促，气管偏左，叩诊右胸鼓音，右侧呼吸音消失。最可能为（）
A. 胸腔积液 B. 大叶性肺炎 C. 干性胸膜炎 D. 右侧气胸 E. 肺气肿 [单选题]凡是在溶解或熔融状态下能导电的物质称为.。
A.溶解质. B.电解质 C.导电质. D.导电体 [单项选择]
The effect of the baby boom on the schools helped to make possible a shift in thinking about the role of public education in the 1920’s. In the 1920’s, but especially (1) the Depression of the 1930’s, the United States experienced a (2) birth rate. Then with the prosperity (3) on by the Second World War and the economic boom that followed it, young people married and (4) households earlier and began to (5) larger families than had their (6) during the Depression. Birth rates rose to 102 per thousand in 1946, 106.2 in 1950, and 118 in 1955. (7) economics was probably the most important (8) , it is not the only explanation for the baby boom. The increased value placed (9) the idea of the family also helps to (10) this rise in birth rates. The baby boomers began streaming (11) the first grade by the mid-1940’s and became a (12) by 1950. The public school system suddenly found [单项选择]（）是浙江沿海最长的一条沙滩，号称“华东第一滩”。
A. 塔湾金沙 B. 南沙 C. 百步沙 D. 鹿栏晴沙 [多选题]双块式和轨枕埋入式无砟道床，路基地段道床结构由（）等部分组成。
A.双块式轨枕（或长枕） B.道床板 C.支承层 D.底座 E.隔离层 [单项选择]下列关于Internet Explorer网页保存的叙述中，不正确的是（）。
A. 可以保存网页中的声音 B. 可以将网页全部信息保存后脱机查看 C. 可以将网页保存为文本文件 D. 保存的网页文件只能存放在电脑桌面 [单选题]关于获得性膜，下列说法错误的是
A.具有选择性吸附能力 B.由菌斑微生物所分泌 C.乃菌斑形成初始，在牙面上覆盖的一层均匀无细胞的薄膜 D.来自唾液糖蛋白结构 E.是细菌附着牙釉质表面的必需条件 [单选题]通过开关或继电器触点的接通和断开来控制执行装置的启动或停止,从而对系统依次进行控制的方式为()。
A.顺序控制 B.反馈控制 C.计算机语控制 D.闭环控制 [单选题]直流电力机车网侧电路其主要功能是由接触网取得电能,因而属于25kV电路,网侧电路又称( )。
A.低压电路 B.高压电路 C.交一直 D.以上都不是 [判断题]压缩机是空调系统高、低压侧的分界点
[单选题]自动站间、半自动闭塞区间出站信号机故障或灭灯闭塞方式为（）。
A.基本闭塞 B.电话闭塞 C.书面联络法 我来回答: 提交
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