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．a(chǎn)ttracts                  B．will attract               C．has been attracting   D．a(chǎn)ttracted

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．a(chǎn)ll living things                                           B．a(chǎn)ll of living thins

       C．the all living things                                      D．a(chǎn)ll 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

假定你是李華，你們學(xué)校因為擔心學(xué)生瀏覽不健康的網(wǎng)站而關(guān)閉了教室中電腦的網(wǎng)絡(luò)瀏覽功能，對此，大多數(shù)同學(xué)都表示不滿和反對。請你根據(jù)以下提示，給校長寫一封信，勸說校長開通教室中的網(wǎng)絡(luò)。

勸說理由：1．有利于查找資料；

2．瀏覽新聞、了解各種信息；

3．作為高中生，學(xué)生們有自己的是非觀和判斷能力，會正確處理問題的。

注意：l．字數(shù)：100左右：  2。信的開頭和結(jié)尾已經(jīng)給出，不計入總字數(shù)。

Dear Head teacher,

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

Yours sincerely,

Li Hua