为做好防火工作，()需配备灭火器。A.客车 B.普通货车 C.电力机车 D.内燃机车

均数适用于（）

A.二项分布资料

B.泊松分布资料

C.正态分布资料

D.偏态分布资料

E.卡方分布资料

阅读理解。

     Cloning is suggested as a means of bringing back a relative, usually a child, killed unfortunately.

Some parents can understand that wish, but it must first be recognized that the copy would be a

new baby and not the lost child. Here lies the_difficulty,_for the sad parents are seeking not a new

baby but a return of the dead one. Since the original would be fondly remembered as having particular

talents and interests, would not the parents expect the copy to be the same? It is possible, however,

that the copy would develop quite differently. Is it fair to the new child to be placed in a family with

such unnatural expectations?

     Copying is also suggested as a means by which parents can have the child of their dreams. Couples

might choose to have a copy of a film star, baseball player or scientist, depending on their interests.

But because personality is only partly the result of genetic inheritance, conflicts would be sure to arise

if the cloned child failed to develop the same interests as the original. What if the copy of Einstein

shows no interest in science? Or the baseball player turns to acting? Success_also_depends_on_

fortune. What if the child does not live up to the hopes and dreams of their parents simply because

of bad luck?

     Every child should be wanted for itself, as a person. In making a copy of oneself or some famous

person, a parent is purposely specifying the way he or she wishes that child to develop. In recent

years, particularly in the U．S., much importance has been placed on the right of individuals to

reproduce in ways that they wish. So I suggest there should be a greater need to consider the interests

of the child and to reject these suggested uses of cloning.

1．The underlined part "the difficulty" in Paragraph 1 refers to ________.

A．cloning a baby is difficult

B．it's difficult to give birth to a new baby

C．the dead child can't come back again

D．the cloned baby can't replace the lost child

2．According to the passage,one of the reasons why couples usually decide to clone babies is ______.

A．to bring back a child killed unfortunately

B．to exchange their children

C．to develop the same interests as their child

D．to succeed in making fortune

3．The sentence "Success also depends on fortune" implies that ________.

A．the result may be unpredictable

B．the child does not live up to the parents' hopes

C．the cloned child fails to develop the same interest as the original

D．the baseball player turns to acting

4．We CAN'T conclude that ________ according to the observation made by the author.

A．it's important to consider the interests of the child rather than the suggested uses of cloning

B．parents can't expect to get the lost child back by cloning a new baby

C．much importance should be placed on the right of parents to reproduce babies in ways that they wish

D．every child should be wanted as a unique individual

《通信建设项目招标投标管理暂行规定》适用于我国( )等邮电通信建设项目的招标投标活动。

A．境内邮政

B．电信枢纽

C．信息网络

D．通信

E．民航

不仅是知觉，其他任何一个心理活动和心理现象，从认知到情绪情感以至个性都离不开记忆的参与。记忆将人的心理活动的过去、现在和未来连成一个整体，使心理发展、知识积累和个性形成得以实现。
这段话的中心意思是( )。

A．记忆使知识积累和个性的形成能够实现
B．记忆使心理发展得以实现
C．记忆将人的心理活动的过去、现在和未来连成一个整体
D．记忆在人的整个心理活动中处于突出的地位

进行电力线路施工作业、工作票签发人或工作负责人认为有必要（）的检修作业，施工、检修单位均应根据工作任务组织（），并作好记录。