在待排序文件已基本有序的前提下，下述排序方法中效率最高的是( )。A．直接插入排序

电子束焊设备中用以产生和控制电子束的电子光学系统称为（）。

下列关于社会保险费用缴纳的说法正确的是：（）

A.用人单位应当自劳动合同生效之日起30日内为其职工向社会保险经办机构申请办理社会保险登记

B.社会保险自愿参加

C.用人单位应当自行申报、按时足额缴纳社会保险费，如因单位效益大幅下降等经相关机构批准可以缓缴

D.无雇工的个体工商户可以直接向社会保险费征收机构缴纳社会保险费

In June 2008,Benita Grist was driving in her hometown of Mississauga as a passenger in the car ahead threw a paper cup out of the window.When Grist horned to express her displeasure, the passenger responded by throwing out a bag.

Instead of annoyed, she decided to do something about it.She organized a one woman litterawareness campaign.She started small,chatting with her neighbors about litter—and asking them to be more conscious of any tendencies they might have to litter.Soon,she noticed local families, kids and all—picking up litter around their homes.”I thought,that’s all it took—for me to open my mouth?” she says.”So I decided to knock on more doors.”

And she didn’t stop there.She approached people on the street,in malls,even in the waiting room before getting an X ray. Grist often started her appeal with something such as,”I hope you don’t think I’m crazy,but...” Yet she was buoyed by the positive response—so much so that in August 2008, she began to contact officials in various levels of government, companies and other institutions in an effort to reach a wider audience.

Through a local Mac’s Convenience Store,Grist managed to contact the company that produces content displayed on their in store monitors.That led to a public service announcement about litter that ran in almost 600 Mac’s stores in Ontario from November 2008 to June 2009. Grist continues to explore every opportunity she has to get the message out.Her grassroots campaign may be different,but she has begun to open people’s eyes about the problem of litter.And thanks to her efforts,in Mississauga,at least,they have begun to do just that.

小题1:How did Benita Grist start her campaign?

A．She chatted with her neighbors.

B．She quarreled with a stranger.

C．She went door to door,talking.

D．She talked to patients in hospital.小题2:The underlined word “buoyed” in Paragraph 4 probably means “-------”.

A．inspired

B．discouraged

C．confused

D．disturbed小题3:What’s the main idea of the passage?

A．Introduction to a one woman litter awareness campaign.

B．How Benita Started the one woman litter awareness campaign.

C．Why Benita Started the one woman litter awareness campaign.

D．Benita and the one woman litter awareness campaign.

下列不属于储瓶间检查要求的是（）。

A.储存装置间内设应急照明，其照度应达到正常工作照度

B.贮存容器无明显碰撞变形和机械性损伤缺陷

C.储存装置间门外侧中央贴有“气体灭火储瓶间”的标牌

D.管网灭火系统的储存装置宜设在专用储瓶间内，其位置应符合设计文件

非正式沟通的优点包括（）

A、沟通方便

B、沟通速度快

C、信息容易失真

D、能提供一些在正式沟通中难以获得的信息