若有如下说明,则______的叙述是正确的。 struct st { int

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问题:

若有如下说明,则______的叙述是正确的。 struct st { int a;int b[2]; }a;

A.结构体变量a与结构体成员a同名,定义是非法的

B.程序只在执行到该定义时才为结构体st分配存储单元

C.程序运行时为结构体st分配6个字节存储单元

D.类型名struct st可以通过extern关键字提前引用(即引用在前,说明在后)

考点:计算机等级考试C语言二级C语言笔试24
题型:单项选择题

She likes _______ but she doesn’t like _______ now, because there are too many people in the pool.

A.swimming; to swim

B.swim; to swim

C.swimming; swimming

D.to swim; swimming

题型:单项选择题

内分泌紊乱综合征多见于()

A.鳞状上皮细胞癌

B.肺泡细胞癌

C.腺癌

D.小细胞未分化癌

E.大细胞未分化癌

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.alone

B.behind

C.out

D.off

题型:单项选择题

易引起新生儿败血症的链球菌中,最多见的血清型为

A.A群

B.B群

C.C群

D.D群

E.F群

题型:单项选择题

单层衬砌

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