The reason why physicians among the best-paid professions in the United States is the long and expensive preparation         to become qualified physicians．

       A．to require                                                   B．having been required

       C．required                                                     D．requiring

For decades, Florida           older people because it has a pleasant climate and a low cost of living there．

       A．attracts                  B．will attract               C．has been attracting   D．attracted

The closer　　　 between China and Russia, the more peaceful　　　 ．

　　　 A．will be the cooperation; is the region B．is the cooperation; will be the region

　　　 C．the cooperation will be; the region is D．the cooperation is; the region will be

We must have effective ways to preserve the variety of life, for         play important roles in the natural environment where they live．

       A．all living things                                           B．all of living thins

       C．the all living things                                      D．all living thing

It puzzles him why people here are so interested in what his job is．He　　　 that question frequently．

　　　 A．has asked B．gets asked C．is asking D．was asked

Many people are　　　　 the use of alternative energy sources for fear that natural resources will run out some day．

　　　 A．pushing aside B．pushing over C．pushing ahead D．pushing for

—What mace Bill so angry?

—　　　　 ．His girl friend promised to come at 8:30, but she hasn’t come yet．

　　　 A．Having kept waiting　　　　　　　　　　　　　　　　　 B．Being kept waiting

　　　 C．Kept waiting D．To be kept waiting

US President Obama visited Thailand ,Myanmer and Cambodia from Nov.18 to Nov.18 to Now.20, 　reflects Asian strategies of the Obama administration.

　　　 A．which 　　　　　　　　　 B．who 　　　　　　　　　　 C．when　　　　　　　　　　 D．where

        a man to fish is a long-term solution         the problem of hunger．

       A．To teach; to solve                                       B．Teaching; solving

       C．Teaching; to solving                                    D．To teach; solving

假定你是李华，你们学校因为担心学生浏览不健康的网站而关闭了教室中电脑的网络浏览功能，对此，大多数同学都表示不满和反对。请你根据以下提示，给校长写一封信，劝说校长开通教室中的网络。

劝说理由：1．有利于查找资料；

2．浏览新闻、了解各种信息；

3．作为高中生，学生们有自己的是非观和判断能力，会正确处理问题的。

注意：l．字数：100左右：  2。信的开头和结尾已经给出，不计入总字数。

Dear Head teacher,

       I'm writing to persuade you to let us surf the Internet in the classroom．

Yours sincerely,

Li Hua