晓桦不注意用眼卫生,造成近视.他看远处物体时,眼球成像情况如图中的______所

题型:填空题

问题:

晓桦不注意用眼卫生,造成近视.他看远处物体时,眼球成像情况如图中的______所示(选填“甲”或“乙”).应采用______透镜加以矫正.他在听音乐时,耳机中的乐曲声是由耳机膜片______产生的.

考点:近视眼及其矫正声音的产生
题型:填空题

运动能力与体内糖原储备量有关的主要方面是()

A.运动力量

B.运动耐力

C.运动技巧

D.运动灵敏性

E.运动间歇性

题型:填空题

关于工程项目复合式组织结构的说法,错误的是(  )。

A.组织结构不受现有管理模式限制

B.组织结构内信息流较为顺畅

C.同一公司内可能有多种组织结构形式

D.同一项目内可能有多种组织结构形式

题型:填空题

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.nothing more

B.nothing less

C.something less

D.something more

题型:填空题

GB23439标准规定混凝土膨胀剂中的氧化镁含量不应大于()

A.3%

B.5%

C.8%

D.10%

题型:填空题

急性左心衰病人进行酒精湿化给氧的目的是

A.稀释痰液
B.松弛支气管平滑肌
C.使肺泡内泡沫破裂而改善通气
D.加强心肌收缩力
E.消毒氧气湿化瓶

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