关于老年人神经系统改变的说法错误的是（） A.脑内神经细胞数目随年龄增加而减少 B.

高剂量TI-Ag（）

A.引起T细胞免疫耐受

B.引起B细胞免疫耐受

C.引起T、B细胞免疫耐受

D.不引起免疫耐受

E.引起免疫抑制

学校篮球集训队11名队员进行定点投篮训练，将11名队员在1分钟内投进篮筐的球数由小到大排序后为6，7，8，9，9，9，9，10，10，10，12，这组数据的众数和中位数分别是（    ）。

阅读理解

     Watch out,Yahoo.There's a search engine out there with super speed and accuracy.It's really cool.

     Google is the Web's largest search engine.In just two years it has gained a reputation for surprising

speed and accuracy,delivering exactly what you're looking for in a second.The site now does this 40

million times a day-a number achieved without spending a penny on a TV or newspaper ad.

     Google doesn't need them.In the past six months alone,the site has won a Webby(the online version of the Oscar) for technical excellence,set a new record for search engines by indexing a billion Web pages.

     Yahoo still has 10 times the audience,but Google consistently ranks first in customer satisfaction: 97% of users find what they're looking for most or all of the time."You see people smile when they use it,like they've found something no one else knows about," says Danny Sullivan,editor of an online newsletter.

     No one is smiling more than Larry Page,27,and Sergey Brin,26,who seem certain to become

billionaires when the company goes public,probably sometime next year.They make a great comedy duo.When they first met as Ph.D.students,the pair say,they found each other horrible－"I still find him horrible," adds Brin-but were driven together by a computerscience project aimed at coming up with better ways of searching the Web.

     The idea behind Google is that traditional search engines are stupid.They think relevance is based on

repetition: if you type in a request for Tiger Woods,say,you'll get websites listed according to how many

times those words appear.Not only is this no guarantee of quality,but it's also open to abuse.If you own a Tiger fan site and want to lead more people to it,simply type his name thousands of times in the site's

source code.

1. The first paragraph serves to________.

A. compare two websites

B. bring out the topic

C. put blame on Yahoo

D. give the background of the topic

2. What does the underlined word "them" in the third paragraph refer to?

A. 40 million times.  

B. Achievements.

C. TV and newspaper ads.  

D. Web pages.

3. Which of the following wins greater customer satisfaction?

A. Yahoo.  

B. Google.

C. Page.  

D. Brin.

4. It can be inferred that Page and Brin________.

A. work for Google  

B. are Tiger fans

C. hated each other  

D. work for Yahoo

5. We can learn from the last paragraph that________.

A. Google is open to abuse

B. Google remains a traditional search engine

C. Google thinks relevance is based on repetition

D. Google is better than traditional search engines

6. 用30词左右概括文章大意

     _____________________________________________________________________________________________________________________________________________________________

下面程序的功能是：把从终端读入的文本(用@作为文本结束标志)输出到一个名为bi.dat的新文件中。请填空。
#include "stdio.h"
FILE *fp；
main( )
char eh；
if((fp=fopen(______))==NULL) exit(0)；
while((eh=getchar( ))!=’@’)fpute(ch，fp)；
felose(fp)；

在INMARSAT-C船站中电子单元的主要作用不是（）

A.信息处理

B.收，发信号

C.频率变换

D.输入，输出数据