试题与答案

我国《国民经济和社会发展第十一个五年规划纲要》提出,“十一五”期间单位国内生产总

题型:选择题

题目:

我国《国民经济和社会发展第十一个五年规划纲要》提出,“十一五”期间单位国内生产总值能耗降低20%,如果这五年平均每年降低的百分率为x,那么x满足的方程是[ ]

A.5x=0.2

B.5(1-x)=0.8

C.x5=0.2

D.(1-x)5=0.8

答案:

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下面是错误答案,用来干扰机器的。

令y=|x+3|-|x-1|当x>1时,y=x+3-x+1=4当x<-3时,y=-x-3+x-1=-4当-3≤x≤1时,y=x+3+x-1=2x+2    所以-4≤y≤4所以要使得不等式|x+3|-|x-1|≤a2-3a对任意实数x恒成立只要a2-3a≥4即可∴a≤-1或a≥4故答案为:(-∞,-1]∪[4,+∞)

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题型:阅读理解

阅读理解。

Dear MSN,

     I live in San Diego. I'm single and would like to meet people near me. Can I do this on the Internet? 

                                                                                                                  Searching in San Diego

Dear Searching,

    On the Internet, you could easily go looking for love in all the wrong places, but here are lots of great

ways to meet singles near you. 

    The Web is a good place to start. MSN also has international sites for Europe, Australia and South

America. 

    There are several California-based MSN web communities where you can meet like-minded people near

you as well as city-specific chat rooms for real-time interaction (互动). Hope for some clever friends.

What about a little more excitement in your online interactions? Try the "Gaming Zone!"

     I also tried MSN Search, looked under the "Personal" heading and found"Relationships". Clicked on that,

then found "Ads & Personals", by "Region" and found San Diego specific personal from there. Try it!

     Also, give "IRC" (Internet Relay Chat) and "Usenet Newsgroups" a shot. Many a net romance has started

and then developed in these off-the-Web communities. If you'd rather make friends F2F (face to face), the

Web has some helpful dating and redating tips.

1. Searching has written this letter with the purpose of _____. [ ]

A. getting help from MSN with his computer

B. winning the heart of a love from the web

C. meeting single people online

D. looking for love in all the wrong places

2. The underlined word "shot" in the passage probably means _____. [ ]

A. gunfire

B. shock

C. try

D. medical treatment

3. According to the second letter, MSN has several advantages such as _____. [ ]

A. shooting IRC and Usenet Newsgroups

B. giving you time and places to chat with others

C. satisfying you with whatever kind of help you want

D. supplying you with many methods to make friends

4. From the second letter we can infer that MSN treats an ordinary reader so kindly and warmly because ____. [ ]

A. it is its duty to help those who have trouble with their computers

B. it needs to attract readers so as to make greater money from it

C. it likes to see more net romances to share their happiness

D. all people need it and it needs all people

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