The idea of prohibiting fireworks first in the 1980s, and the bans didn’t gain popular support until this year.A. flashed B. succeed C. emerged D. spread 题目和参考答案——青夏教育精英家教网—

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The idea of prohibiting fireworks first ________ in the 1980s, and the bans didn’t gain popular support until this year.

A. flashed B. succeed C. emerged D. spread

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The world today _____ different without the amazing discoveries produced by great scientists.

A.were B.had been C.would be D.would have been

-I have got a bad cold.

-No wonder you _______these days.

A. have coughed B. coughed

C. have been coughing D. are coughing

Big trees are incredibly important ecologically. For a start, they provide food for countless other species and shelter for many animals. With their tall branches in the sun, they capture vast amounts of energy. This allows them to produce massive crops of fruit and flowers that sustain much of the animal life in the forest.

Only a small number of tree species have the genetic ability to grow really big. The biggest are native to North America, but big trees grow all over the globe, from the tropics to the forests of the high latitudes (纬度). To achieve giant size, a tree needs three things: the right place to establish its seedling, good growing conditions and lots of time with low adult death rate. Lose any of these, and you will lose your biggest trees.

In some parts of the world, populations of big trees are dwindling(逐渐变少) because their seedlings cannot survive. In southern India, for instance, an aggressive non-native bush, Lantana camara, is invading the floor of many forests. Lantana grows so thickly that young trees often fail to take root. With no young trees to replace them, it is only a matter of time before most of the big trees disappear.

Without the right growing conditions, trees cannot get really big and there is some evidence to suggest tree growth could slow in a warmer world, particularly in environments that are already warm. Having worked for decades at La Selva Biological Station in Puerto Viejo de Sarapiqui, Costa Rica, David and Deborah Clark and colleagues have shown that tree growth there declines markedly in warmer years. “During the day, their growth shuts down when it gets too warm, and at night they consume more energy because their metabolic (新陈代谢) rate increases,” explains David Clark. With less energy produced in warmer years and more being consumed just to survive, there is even less energy available for growth.

The darks’ theory, if correct, means tropical forests would shrink over time. The largest, oldest trees would progressively die off and tend not to be replaced. According to the Clarks, this might cause a destabilization(不稳定) of the climate; as older trees die, forests would release some of their stored carbon into the atmosphere, causing a cycle of further warming, forest shrinkage and carbon emissions.

Besides, big trees face threats from elsewhere.

1.According to the passage, big trees make great contributions to the ecosystem because .

A. they can capture large amounts of energy.

B. they determine the change of global climate.

C. they provide the essentials for many creatures.

D. they can avoid a new cycle of further warming.

2.All the following factors are a must for making big trees EXCEPT .

A. no deadly damage

B. genetic contribution

C. ideal environment for growth

D. high-latitude location

3. What is the best title of the passage?

A. Big trees in trouble.

B. Advantages of big trees.

C. Results of big trees’ disappearing.

D. Importance of big trees to humans.

4.What will the author most probably discuss after the last paragraph?

A. More threats to the existence of big trees.

B. The effect of human activities on big trees.

C. Benefits of big trees to the whole atmosphere.

D. Comparison between common trees and big ones.

With the city ________ clouded by dirty smog, the government has planned to shut down the four major coal-fired power plants.

A. abruptly B. frequently

C. occasionally D. regularly

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（∧)，并在其下面写出该加的词。

删除：把多余的词用斜线（\ )划掉。

修改：在错的词下划一横线（—），并在该词下面写出修改后的词。

注意：1.每处错误及修改均仅限一词；

2.只允许修改10处，多者(从第11处起)不计分。

Dear Mr. Black,

I’m very thank to you for inviting me to stay with you in the come summer vacation. I have been dreamed of seeing you again so that I can get help from you in my English learning. And I’m afraid I cannot go to your place in this summer. I’ve promised my grandmother, she lives in the country, to spend this summer with her. She misses me too much that I find difficult to refuse her request. I’m busy preparing for my examinations in present. I planned to visit you in winter if it’s convenient to you.

Best wishes.

Yours truly,

Li Ying

Volunteers Wanted

Ecuador

A village in Ecuador has recently developed a ecotourism (生态旅游) project that needs volunteers with a background in tourism. This is an unpaid, challenging job that might last one year. You must be enthusiastic and speak good level of Spanish. You will need to cover your food and lodging on your own.

To find out more information, e-mail volunteer@ ecuador.org.

Bali

Would you like to teach English or computer skills to our local school children in a lovely village in the mountains of Bali? There are also western children homeschooling here, some of whom need help with their daily programs. For volunteers of homeschooling, you are required to have baby-sitter experience. Please contact me for more information at Bali@yahoo.com.

Dominica

Experience nature and adventure in Dominica, the island of the Caribbean. Be part of a happy team, doing things from gardening, to building tree houses, to maintaining hydro systems.

For more information please e-mail info@Dominica.com.

1.A college graduate who speaks good Spanish and is interested in ecotourism had better work in ______.

A. an island of Dominica B. a village in Ecuador

C. the mountains of Bali D. a house in Caribbean

2.One who wants to teach small children English will contact ______.

A. volunteer@org B. info@Dominica.com

C. volunteer@ ecuador.org D. Bali@yahoo.com

3.Which is NOT a required task for a volunteer at the island of Dominica?

A. Gardening.

B. Building tree houses.

C. Swimming in the pool.

D. Maintaining hydro systems.

—I’ve just finished my interview. I’m pretty hopeful.

—______. I hope it works out for you.

A. It’s all right B. Good idea

C. All the best D. That sounds great

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两赴，每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（八），并在其下面写出该加的词。

删除：把多余的词用斜线（＼）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1．每处错误及其修改均限一词。

2．只允许修改10处，多者（从第11处起）不计分。

When I was a child, I spent more than ten years learn the violin．Therefore, I couldn't understand "real music"．After I graduated at high school, a friend of mine suggested that we started to learn the guitar because we all thought it was cool．l will never forget the day on that we went to buy guitars in the guitar store． There I saw a guitar player playing the guitar, which I really enjoyed．He became my the first guitar teacher．It took me such a long time choose a guitar among several wonderful model．Now the guitar is the most importantly part of my life and I practice it every day.

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