计算机各功能部件之间的合作关系如图2-1所示。假设图中虚线表示控制流，实线表示数据流

选出下列各项中成语使用恰当的一项：（）

A．精明的商家早就意识到，中国加入WTO以后，竞争不可避免，一旦陷入被动后再临渊羡鱼，就为时已晚。

B．灾情就是命令，地震救援人员们冒着大雨，跋山涉水，克服重重困难，终于按规定时间抵达四川震中灾区，并立即投入了救援工作。

C．去年，申奥成功、加入世贸、男足出线，对中国人来说真可谓是多事之秋。

D．认为，他笔下的这位主人公才是一个成熟的男人，像这样的男子汉，用任何有关成熟的溢美之词去形容都不为过。

中国中铁一局专家型工人窦铁成说：“在外施工，我们代表企业、代表中国中铁一局。在外国人面前，我们代表中国，要努力把工作做好，维护国家的形象。”窦铁成这样说的，也是这样做的。这表明窦铁成

①能自觉维护国家的荣誉和利益； ②积极承担对国家应尽的责任；

③表现出了对祖国的高度责任感； ④总是能够与国家共渡难关；

A．①②③④

B．①②③

C．①②④

D．②③④

MANY of us enjoy doing it: you turn on the camera on your mobile phone and hold it at a high angle (角度), making your eyes look bigger and your cheekbones more marked out. You turn to your best side and click.

There it is – your selfie.

Over the past year, “selfie” has become a well-known term across the globe. This August the Oxford dictionary added the word to their online dictionary and defined it as: “A photograph that one has taken of oneself, typically with a smartphone or webcam and uploaded to a social media website.”

Today it’s not difficult to find social networking pages full of photos people have taken of themselves and their friends. And selfie culture has become especially related to young people. As many as 91 percent of teenagers have posted photos of themselves online, according to a recent survey by the US Pew Research Center.

So what are the reasons for the rise of selfie culture?

“The cult (狂热) of the selfie celebrates regular people,” Pamela Rutledge, a professor at the Massachusetts School of Professional Psychology, told Vogue magazine. “There are many more photographs available now of real people than models.”

Posting selfies also allows you to control your image online. “I like having the power to choose how I look, even if I’m making a funny face,” Samantha Barks, 19, a high school student in the US, told Vogue.

In addition to self-expression and documentation (记录), selfies “allow for an close friendship for long-distance friends, because you can see each other’s faces every day”, wrote Casey Miller at The Huffington Post.

But US psychologist Jill Weber is concerned that selfies might lead to social problems. “There’s a danger that your self-esteem (自尊心) may start to be tied to the comments and ‘likes’ you get when you post a selfie, and they aren’t based on who you are – they’re based on what you look like,” Weber told Vogue. “When you get nothing or a negative response, your confidence can plummet.”

小题1:The first paragraph is intended to _________.

A．explain why selfie is popular

B．describe how to make selfie

C．show the importance of selfie

D．introduce the topic of selfie小题2:How many reasons for the rise of selfie culture are mentioned in the passage?

A．Two

B．Three

C．Four

D．Five小题3:What is Jill Weber’s opinion about selfies?

A．Comments on selfie are based on who you are.

B．Selfies have more disadvantages than advantages.

C．Others’ response to selfies might affect one’s self-esteem.

D．Selfies shouldn’t be encouraged for they lead to social problems.小题4:The underlined word “plummet” in the last paragraph is closest in meaning to __________.

A．go down

B．calm down

C．pick up

D．build up

国丰公司与民泰公司签订了设备租赁合同，租赁合同尚未到期，国丰公司被债权人申请破产，法院裁定宣告国丰公司破产，以下说法正确的是： ( )

A．民泰公司在国丰公司被申请宣告破产后有权收回出租的设备

B．如果设备在国丰公司破产宣告前毁损，民泰公司可以获得等值赔偿

C．如果设备在国丰公司破产宣告后由于清算组疏于管理毁损，民泰公司可以获得等值赔偿

D．如果设备在国丰公司破产宣告后被不知情的清算组转让给第三人，民泰公司无权获得等值赔偿，只能就损害赔偿权申报破产债权

何谓三段式电流保护？其各段是怎样获得动作选择性的？