变压器的检修年限是多少年？

请你按先后顺序写出我国汉字字体的发展变化。

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鉴别右心衰竭与肝硬化的要点是

A．下肢水肿

B．肝脏肿大

C．肝颈静脉回流征阳性

D．食欲减退.恶心.呕吐

E．腹水形成

Have you felt annoyed when a cellphone rings during the class? Something must be done to stop this．Now in New York City, USA，a rule is carried out in schools．Students can’t even bring cellphones to schoo1．Is it a good thing or not?

Anxious parents say that cellphones are an important tool in holding New York city’s families together．

“I worry about it，” said Elizabeth Lorris Ritter, a mother of a middle school kid． It’s necessary in our everyday life．We have a washing machine. We have running water, and We have cellphones．”

Many American parents think cellphones connect them to their children on buses，getting out from subways, walking through unknown places．

“I have her call me when she gets out of school，”said Lindsay Walt, a schoolgirl’s mother． “No one in New York is going to let their child go to school without a cellphone”

What about the cellphone owners, the students? Most of the students said cellphones were essential and the cellphone was like all extra(额外的)hand or foot for them．

“I feel so empty，”said May Chom，1 4．There is also no way to listen to music on the way to school without my phone．It will be a really, really boring trip．”

小题1:You can use a cellphone___________．

A．to enjoy listening to music

B．to work as running water

C．to work as a washing machine

D．to send children to school小题2:Which of the following statements is TRUE?

A． Many American parents don’t think cellphones are necessary for the students．

B．Cellphones only bring troubles to the school life．

C． Cellphones connect children with their families when they are outside．

D． All the school children agreed not to use cellphones at school.小题3:What does the underlined word “essential” mean in Chinese?

A．时髦的．

B．必要的．

C．昂贵的．

D．浪费的小题4:The article is about the____ in carrying out the rule not to use a cellphone in schoo1．

A．happiness

B．interest

C．problem

D．satisfaction

预压排水固结法中的排水竖井间距应满足一定要求，一般情况下，下述( )是合理的。

A．砂井井径比为7 (B

B．排水带井径比为20

记账式国债开户费收取（）元。

A.5

B.10

C.15

D.20