题目内容
2. Scientists have (取得突破) in their treatment of that disease.
2. made a breakthrough
Nowadays,there is a heated debate on whether pollutants should be cleaned in the air. Cleaning up the air,while good for our lungs,could make global warming worse. And the pollutants still go up around the air,along with carbon dioxide.
These pollutants are called aerosols and they include soot as well as mixtures of nitrogen (氮) and sulfur (硫) and other stuff into the air. Natalie Mahowald,a climate researcher at Cornell University,says,so far,scientists have mostly tried to understand what those aerosols do while they’re actually in the air.
“There are so many different kinds of aerosols,” she says. “Some are warm and some are cool. But in fact,humans are giving out a lot of extra aerosols,and they tend to cool for the most part. ”
The aerosols reflect sunlight back into space,or keep us cool. But it turns out that’s not all they do. These aerosols also influence how much carbon dioxide gets drawn out of the air by plants on land and in the sea.
“They can add nutrients,for example,to the ocean or to the land ,” Mahowald says. “But also while they’re in the atmosphere they can change the climate,and thus that also can influence the amount of carbon,the land or the ocean can take up. So there are quite a few different ways that aerosols can act on each other. ”
Mahowald’s results suggest that reducing those pollutants could be an even bigger problem than realized,when you consider that aerosols help remove carbon dioxide from the air by encouraging plant growth. Hard numbers on this effect are highly uncertain at the moment,but this could turn out to be quite significant.
And studying it is not easy because the effects aren’t well understood. For example,nitrogen can be a fertilizer (肥料) , but it can stop plant growing when nitrogen comes out of the air in acid form.
Right now it seems like we’re much more likely to clean up aerosol pollution,while increasing the amount of carbon dioxide in the air. So scientists,unfortunately,may have a chance to see whether this experiment on our planet should continue or not.
( ) 5. From Paragraph 2,we know that .
A. scientists have been aware of how aerosols work
B. Natalie Mahowald is an expert in climate
C. cleaning up the air is so popular
D. pollutants are under control so far
( ) 6. What does the last sentence of the passage imply?
A. Scientists will be in a dilemma.
B. The experiment will be successful.
C. Scientists will carry out the experiment.
D. Scientists have difficulty in the experiment.
( ) 7. Which of the following can be the best title of this passage?
A. Pollutants in the Air
B. The Experiment on the Planet
C. The Reason for Global Warming
D. The Influence of Aerosols
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。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(A ) ，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：在错的词下画一横线，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仅限一词；
2. 只允许修改10处，多者(从第11处起) 不计分。
Recently,our school has held the meaningful discussion on whether it is reasonable for middle school students to have classes on weekends. Some of our classmates believe we should have classes on weekends because we can make fully use of free time to review the lessons we had learnt. Some others are against the opinion,saying we had better to have a good rest on weekends so that we can work effective during the weekdays. The rest agree with neither of the opinion. They have the view which keeping the balance between work and play are important for us. They suggest one day of the weekend should used to learn our lessons and during the other day we do something interested or have a rest.
01. 书面表达
假设你是红星中学高二(1) 班的学生李华，下面四幅图描述了你们家上周收留流浪狗的真实故事，请根据图片的先后顺序，为校刊“英语园地”写一篇短文。
注意：1. 文章的开头已为你写好；
2. 词数100左右。
Last Friday,
The following are a few tips that I follow to create happiness in my life.
2. 虽然他在这里居住了 5年，但他并不熟悉所有的人。
，he wasn't familiar with all the people.
3. They took the injured straight to the hospital. Otherwise some of them might die.
7. The guests were (震惊) by the boy's foul language.
4. This boy was (scold) for what he had,done in the class.
8. He was unable to hold a regular job but could (load) trucks and was proud that he'd managed to buy his own television set.
