在健康调查中，决定样本大小的因素不包括 A．调查对象变异的大小 B．患病率的高低 C

某校地处城乡接壤处，控制流失生工作艰巨。现该校组织学生开展一次流失生状况调查。

（1）同学们应准备哪些法律？

________________________________________________________________________________ （2）学生流失的原因有哪些？你认为学校应采取哪些措施“控流”？

________________________________________________________________________________ （3）针对本次调查活动，学校组织同学观看一部与义务教育有关的电影，你能向学校推荐一部吗？

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（4）同在一片蓝天下，共享受教育权利。请你给你的同龄人写一句最能体现受教育者权利和义务同在的寄语，以此共勉。

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Making an advertisement for television often costs more than a movie．For example, a two-hour movie costs $ 6 million to make．A TV commercial can cost more than $ 6 000 a second．And that does not include cost of paying for air time(电视节目开始的时间)．Which is more valuable, the program or the ad? In terms of money--and making money is what television is all about  the commercial is by far the more important．

Research, market testing, talent, time and money-----all come together to make us want to buy a product．No matter how bad we think a commercial is, it works．The sales of Charm went up once the ads began．TV commercials actually buy their way into our head．We, in turn, buy the product．

And the ads work because so much time an attention are given them．Here are some rules of commercial ad making．If you want to get the low middle-class buyer, make sure the announcer has a tough, manly voice．Put some people in the ad who work with their hands．If you want to sell to upper-class audience, make sure that the house, the furniture, and the hair style are the types that the group identifies (识别) with．If you want the buyer feel superior to the character selling the product, then make that person so stupid or silly that everyone will feel great about himself or herself

We laugh at commercials．We don't think we pay that much attention them．But facts show we are kidding ourselves．The making of a commercial that costs so much money is not kid stuff．It's big, big business．And it's telling us what to think, what we need, and what to buy．To put  it simply, the TV commercial is a form of brainwashing．

小题1:TV commercials are more important than other programs to television because _______．

A．they bring in great profits (利润)

B．they require a lot of money to make

C．they are not difficult to produce

D．they attract more viewers than other programs小题2:The purpose of all the efforts made in turning out TV commercials is ________．

A．to persuade people to buy the product

B．to show how valuable the product is

C．to test the market value of the product

D．to make them as interesting as TV movies小题3:From the rules set for making commercial ads, we can see that_________．

A．the lower-middle-class buyer likes to work with his hand

B．the more stupid the characters, the more buyers of the product

C．ad designers attract different people with different skills

D．an upper-class buyer is more interested in houses and furniture than a lower-middle-class buyer小题4:It is believed by the writer that_________．

A．few people like to watch TV commercials

B．TV commercials are a good guide to buyers

C．TV commercials often make people laugh

D．people do not think highly of TV commercials

手部护理时应该使用多少度的酒精进行消毒（）

A.80％

B.90％

C.75％

以下程序运行后的输出结果是
#include＜stdio.h＞
main()
int n=2, k=0;
　 while(k++ && n++＞2);
　printf("%d %d\n", k, n);

A) 0 2
B) 1 3
C) 5 7
D) 1 2

“天地不仁，以万物为刍狗”中“天地不仁”指的是天地不仁爱，不仁慈。