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【简答题】
When we hear the words “college students”, we usually think of a young person between 18 and 22 years old. But in the U.S.A today, a college student often is much older. In fact, educators say in the next few years colleges and universities may have more older part-time students than traditional (传统的) full-time younger students. Educators report a big increase in the number of Americans who attend college and university classes in the evening or at night or weekends. Most of them are older than 25 years old and more have full-time or part-time jobs. Many are in their thirties or forties. Why are so many people deciding to spend their time and money in order to continue their education? Most are doing it because they believe more education will help them to get a better job. Some are industrial workers whose factories have closed. They are learning new skills to prepare for other kinds of work. Some of the part-time students are not pleased with the jobs they have. They are studying for new ones. Some have retired (退休) and are looking for new kinds of work. Two of every three of the students older than 35 are women. Many of them are returning to school after years of staying at home to care for children. Are older students good students? Most teachers say yes. They say older students really want to learn. They ask difficult questions and are not pleased with simple answers. They often get high grades. 小题1: It’s said that in the next few years _________________. A.students in colleges and universities will be much older B. full-time students in colleges and universities will be even younger C. American colleges and universities will take in part-time students equally D. The number of older students will be greater than that of the younger ones 小题2:Judge which of the following is not true according to the above passage. A.It’s reported that a large number of Americans attend college or universities classes in their spare time. B. Most of them are over 25. C. Most of them are without jobs. D. The number of students in colleges and universities is reported to have gone up greatly. 小题3:Why are so many people deciding to go on with their education? Because___________. A.Most of the Americans enjoy learning something new B. Most of them believe: more education, better jobs C. They have lost their jobs D. They are tired of their jobs they have 小题4:They often get high grades” means ____________. A.they rise to high grades easily B. they often get very good marks (分数) C. they are more likely to receive a master’s or a doctor’s degree upon graduation D.they often win high prize 小题5:What does the whole passage mainly tell us? A.Why does so many older students go to college in America. B.What older students in college can learn. C.Older students are mostly good students D.Higher education can help you get a good job.
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参考答案:
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【单选题】对于配位聚合生产出来的聚丙烯下列说法错误的是
A.
聚丙烯(PP)是用Zigler-Natta催化剂聚合制得的具有高结晶度和高熔点热塑性高分子材料
B.
机械性能好
C.
有毒
D.
容易加工成型、原料易得、价格低廉
【单选题】丙烯腈-苯乙烯(丁二烯)共聚树脂的主要卫生问题是
A.
树脂的本身毒性
B.
丙烯腈单体残留
C.
苯乙烯单体残留
D.
丁二烯单体残留
E.
聚合中添加的防老剂
【简答题】Our environment ______ (get)worse and worse with the increase of the world population.
【单选题】丙烯腈、苯乙烯(丁二烯)共聚树脂的主要卫生问题是
A.
树脂的本身毒性
B.
丙烯腈单体残留
C.
丁二烯单体残留
D.
苯乙烯单体残留
E.
聚合中添加的防老剂
【单选题】在家鼠中,花毛基因是X连锁遗传,而且对正常毛是显性,如果一正常毛色雌鼠与花毛雄鼠杂交,下述哪句话正确(雌鼠是同配性别) ( )
A.
F 1 代中所有雌鼠都是花毛,但F 2 代中无一只花毛雌鼠
B.
由于花毛是由显性基因控制的,所以F 1 代的个体都应是花毛
C.
F 1 代中毛色表型比率相同,F 2 代中花毛:正常毛=1:1
D.
由于无法解释亲本是纯合体还是杂合体,故不能回答这个问题
【简答题】A—United Nations Environment Programme B—World Health Organization C—World Meteorological Organization D—World Trade Organization E—World Intellectual Property Organization F—World Peace Council G—Int...
【单选题】在家鼠中,花毛基因是 X 连锁遗传,而且对正常毛是显性,如果一正常毛色雌鼠与花毛雄鼠杂交,下列 正确(雌鼠是同配性别)
A.
F 1 代中所有雌鼠都是花毛,但 F 2 代中无一只花毛雌鼠
B.
由于花毛是由显性基因控制的,所以 F 1 代的个体都应是花毛
C.
F 1 代中毛色表型比率相同, F 2 代中花毛:正常毛 =1 : 1
D.
由于无法解释亲本是纯合体还是杂合体,故不能回答这个问题
【单选题】复装置挤压系统常用的()辊,它的特点是无毒不含硫,不易与聚乙烯聚丙烯粘附。
A.
硅橡胶
B.
丁晴胶
C.
氯丁胶
D.
氟橡胶
【单选题】Environment and Health Issues We are living in a hostile world: depletion of ozone (臭氧) layer, global warming, air pollution, worldwide transmission of AIDS.... The fact that these environmental and h...
A.
Y
B.
N
C.
NG
【简答题】World Wildlife Fund (WWF)'s goal is to save the world's environment. The organization was set up ___21__September 11,1961. In the beginning, WWF worked __22__ the world's wildlife. Now, it works to sa...
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