英国李约瑟博士在他的《中国科技史》中,评价中国古代某科学家的著作时说:“……读起来并

题型:单项选择题

问题:

英国李约瑟博士在他的《中国科技史》中,评价中国古代某科学家的著作时说:“……读起来并不像是17世纪的学者所写的东西,倒像是一位20世纪的野外勘察家所写的考察实录。”该科学家及著作应该是()

A.郦道元和《水经注》

B.沈括的《梦溪笔谈》

C.郭守敬的《授时历》

D.徐霞客和《徐霞客游记》

考点:高中历史科技成就科技成就题库
题型:单项选择题

关于工程施工组织设计中,计算主要施工机械的需要量要依据的是( )。

A.扩大定额

B.工程建筑安装造价

C.建筑面积

D.施工方案、计划进度和工程量

题型:单项选择题

对于右心室流出道室速,下列可作为首选的药物是()

A.胺碘酮

B.奎尼丁

C.β受体阻滞剂

D.地高辛

E.腺苷

题型:单项选择题

Part 4


Questions 26-45


·Read the following passage and decide which answer best fits each space.
·For questions 26-45, mark one letter A, B, C or D on the Answer Sheet.
Participation (26) high school sports is not a constitutional right. (27) , it is a privilege, paid for by taxpayers, open to students who promise to (28) certain conduct requirements on and off the field. One of these promises is to (29) from using drugs. Drug use is a serious problem among high school students. Studies show that as many as 500, 000 high school students use muscle-pumping, life-destroying substances such as steroids. Many more use illegal drugs, (30) cause discipline problems and (31) the stage for lifelong (32) .
Drug testing works to (33) and identify use. That is why drug testing is required to compete in the Olympics, the National Collegiate Athletic Association and the National Football League. (34) drug testing was instituted by these organizations, use of performance- (35) drugs has been greatly reduced. We should want (36) in schools.
Indeed, many athletes (37) testing programs, and no wonder. Without testing, athletes have to choose between drug use and a competitive disadvantage (38) the field.
Those who challenge the need for drug testing may be forgetting (39) it is like be an adolescent. Peer pressure is enormous, and one of the few effective counter-weights is the fear of being caught. More importantly, once drug use is (40) , a school can (41) to the student before he or she gets addicted or arrested.
For 25 years, public schools (42) by federal judges and civil libertarians, with results everyone can see. It is time (43) decisions on how to run public schools locally (44) officials. There is nothing unconstitutional about asking those who gain the advantages of school-sponsored athletics to contribute to the safety of other players, the integrity of the game and their own well-being. The Supreme Court should leave these programs (45) .

A.But

B.Rather

C.Therefore

D.Thus

题型:单项选择题

试述呼吸系统的组成。

题型:单项选择题

的值是()。

A.11

B.

C.2

D.

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