This is News on the Hour, Ed Wilson reporting. The President and First Lady will visit Africa on a goodwill tour in May. They plan to visit eight African countries. Reports from China say the Chinese want closer ties between China and the U.S. and Western Europe. A group of Chinese scientists will start its ten-nation tour next month. Here in Miami, the mayor is still meeting with the leaders of the teachers’ union to try to find a way to end the strike. City schools are still closed after two weeks. In news about health, scientists in California report findings of a relationship between the drinking of coffee and the increase of heart disease among women. According to the report in the American Medical Journal ( = magazine) , the five-year study shows this: Women who drink more than two cups of coffee a day have a greater chance of having heart disease than women who do not. In sports the Chargers lost again last night. The BBS beat them 1 to nothing. The Wingers had bette
A. no heart disease will be found if people don't drink coffee
B. no one should drink more than two cups of coffee a day
C. the more coffee people drink, the more chance they will get to have heart disease
D. women's heart disease has something to do with their drinking of coffee
| One of the many oddities of migration
policy is that immigrants coming in to work permanently are usually a minority
of those who arrive legally. Most (1) countries admit
migrants mainly on grounds that have (2) to do with work.
They also admit two large groups on grounds that have nothing to do with their
skills or education, (3) these characteristics may determine
(4) rapidly they integrate. Almost everywhere, the biggest group (5) relatives of those who have already (6) . In the United States they (7) three-quarters of all legal (8) migrants. America even gives a few visas to (9) adult siblings. In parts of Burope, family reunification has become family formation, (10) sometimes delays integration: for instance, it allows third-generation Pakist A. are now moved B. are moving now C. are now moving D. are now being moved [多选题]关于地下连续墙支护的施工要求说法， 正确的有（）。
A.适用于周边环境条件很复杂的深基坑 B.单元槽段长度宜为4~6m C.钢筋笼吊放就位后应及时浇筑混凝土，间隔时间不宜大于2h D.灌注混凝土时混凝土强度应按设计要求强度等级进行配制 E.墙顶宜高出设计标高300~500mm [简答题]什么叫络和效应？
[简答题]广义的小学教育目的
[多选题]设备完好率和一级设备占有率分别为( )。
A.一级设备占有率=(一级设备数/设备总数)×100％ B.一级设备占有率=[(一级设备数+二级设备数)/设备总数]×100％ C.设备完好率=(一级设备数/设备总数)×100％ D.设备完好率=[(一级设备数+二级设备数)/设备总数]×100％ [多选题]空压机组不能起动可能的原因有（）。
A.电源故障 B.电缆连接松脱 C.电动机断路器跳闸 D.压力开关设定错误或本身故障 E.油过滤器渗油 [单项选择]晶界处由于原子排列不规则，晶格畸变，界面能高，使（）。
A. 强度、硬度增高，使塑性变形抗力增大 B. 强度、硬度降低，使塑性变形抗力降低 C. 强度、硬度增高，使塑性变形抗力降低 D. 强度、硬度降低，使塑性变形抗力增大 [单选题]强混机轴承润滑的油脂牌号是（ ）。
A.2号锂基脂 B.EP2润滑脂 C.钙基脂 D.二硫化钼 [判断题]高压直流系统运行中的直流场中性区域设备、接地极线路、接地极及站内临时接地极均应视为带电体。()
A.正确 B.错误 [多选题]施工设计的井控要求中，制定具体的预防和应急措施，应包括但不限于（ ）、防喷器的规格、组合及示意图、四种作业工况时，应有具体的井控预防措施等内容。
A.压井液要求 B.井架高度 C.井控装置的现场安装、调试与试压要求等 D.发生溢流时的关井方法的确定 [单选题]食管癌癌肿浸润管壁各层及全周，恶性程度高的是
A.溃疡型 B.缩窄型 C.髓质型 D.腔内型 E.蕈伞型 [单选题]用人单位对已确诊的尘肺职工，（ ）。
A.尊重病人意愿,是否继续从事粉尘作业 B.必须调离粉尘作业岗位 C.由单位决定,是否从事粉尘作业 [单项选择]
下面四句话表现了与讲话人的亲密关系的不同程度，排出由“亲”到“疏”的正确顺序来。（） A. ①②③④ B. ④②①③ C. ③①②④ D. ③①④② 我来回答: 提交
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