某些直升机起落架收放动作筒内设置了缓冲装置以限制活塞的运动速度，一般来说，该缓冲装置

根据上下文的意思，把下列对话补充完整。

A: 小题1:_____________________________?

B: Yes, please. I want a sweater for my daughter.

A: Look! Here are some sweaters for girls.

小题2:_____________________________?

B: Size M.

A: Do you like this red one?

B: Yes. My daughter likes red best.

小题3:________________________?

A: $25.

B 小题4:___________________.

Do you have any cheaper ones?

A: How about this one? It’s only$18.

B: Ok, I’ll take it. Here’s the money. 小题5:_________.

A: You’re welcome.

Matt Haimovitz is 42 and a renowned cellist (大提琴手) in the world. He rushed into the classical music scene at the age of 12 after Itzhak Perlman, the famed violinist, heard him play.

But nothing in his family history explains where Haimovitz got his extraordinary talent. And that’s typical, Ellen Winner, a professor says.

“People are fascinated by these children because they don’t understand where their talent came from. You will see parents who say, ‘I wasn’t like this, and my husband wasn’t like this.’ It seems to sometimes just come out of the blue,” Winner says.

It’s not clear whether a prodigy’s （天才）brain is any different from the brains of other children, in part because there have been no study comparing the brains of prodigies to those of average people.

“But I believe that anything that shows up so early, without training, has got to be either a genetic or some other biological basis,” Winner says. “If a child suddenly at the age of 3 goes to the piano and picks out a tune and does it beautifully, that has to be because that child has a different brain.”

Children who are extremely gifted tend to be socially different, too, Winner says. “They feel like they can’t find other kids like themselves, so they feel strange, maybe even like a freak, and feel like they don’t have anybody to connect with. On the other hand, they also long to connect with other kids, and they can’t find other kids like themselves.”

As Haimovitz got older, he became frustrated. He wanted to play other kinds of music but felt constricted by the image and the expectations of the boy prodigy who played classical music and filled concert halls.

“When you start that early, you suddenly start to grow up in public, and I wanted to experiment,” Haimovitz says.

So he took his cello into punk rock clubs and coffee houses. He played Bach, Haydn and Hendrix. “My teacher was Leonard Rose, and we never played any 20th-century music. He didn’t like it. But once I was exposed to James Marshall “Jimi” Hendrix, Miles Dewey Davis El and others, I couldn’t really turn back. I wanted to know more,” he says.

小题1:According to some parents, prodigies’ extraordinary talent       .

A．comes unexpectedly

B．is inherited from parents

C．results from hard work

D．is trained in early times小题2:Winner seems to agree to the fact that ____.

A．average people have their particular brains

B．biology is the base of a different brain

C．a prodigy’s brain is superior to those of others

D．genes play an important role in a prodigy小题3:According to the text, gifted children are         .

A．lonely

B．easy-going

C．innocent

D．social小题4:The last paragraph is mainly about how Haimovitz was trying to         .

A．build up his friendship

B．play different kinds of music

C．set up the image of a prodigy

D．perform classical music creatively

相比模拟通信，数字通信的优点包括（）。

A． 保密性好

B．抗干扰能力强

C．占用频带窄

D．便于采用大规模集成电路

合并心血管疾病病人术前应该做哪些必要的准备（）

A.控制心律失常

B.控制高血压

C.改善心脏功能

D.纠正水、电解质和酸碱紊乱，特别应纠正低血钾

E.急症手术应尽可能完成上述一些准备，同时在有限的时间内进行心电图、血气和电解质检查，处理心律失常（如快速房颤）或心力衰竭

预防医学工作者在宣传党和国家的卫生工作方针、法规、政策，宣传医学卫生知识，动员和组织群众同不良的卫生习惯作斗争时应具有的道德素质，其中错误的是（）

A.态度诚恳，尊重群众

B.晓之以利害，教之以方法

C.取得受教育者的合作与支持

D.待有疫情出现，再进行有计划、有步骤地向群众作重点宣传

E.动员和组织群众同不良的卫生习惯作斗争