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2. Before the machines leave the factory, there is a series of tests that must be passed.
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3. At the end of the speech he expressed the desire that he should come and work in China someday.
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4. They signed an agreement that they should expand the trade between the two countries.
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5. The commander gave orders that we should cross the river.
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6. She was excited when she heard the news.
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7. I'm glad I have seen your mother.
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8. The mother was pleased when she saw her son doing so well at school.
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9. He was very happy when he saw us so happy.
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10. They will be disappointed when they hear it.
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阅读下列短文, 从所给的四个选项中, 选出最佳答案。
Milan, the second largest city of Italy, has won an undesirable (不受欢迎的) world record. Of the 54 big cities studied by the World Health Organization and the United Nations, Milan was considered to have the worst air pollution.
According to these two 10-year studies, the level of air pollution in Milan is twice as high as the levels in Paris and Beijing and three times those in Tokyo and London, and four times that in New York.
The reason for Milan's bad pollution, according to the scientists, is that the city is situated in a valley that holds back the poisonous gases.
Though Milan has taken some measures to lower the level of pollution, the situation is still worrying. People joke about each other, "If you're travelling to Milan, be sure to bring your gas mask."
(1) Which is not mentioned in the passage?
[ ]
A. The reason for the air pollution in Milan.
B. The measures taken by Milan to solve the problem.
C. The city's air regarded to be worst polluted.
D. The conclusion that the air in Milan was badly polluted.
(2) Which of the following correctly shows the level of air pollution
in Milan?
[ ]
A. 
B. 
C. 
D. 
(3) Why is the air pollution in Milan so serious?
[ ]
A. Because the city lies in a place where it is difficult for polluted air to move away.
B. Because too many cars are being driven in the city.
C. Because the city has some mountains.
D. Because Milan has taken some worrying measures.
(4) This passage tells us __________.
[ ]
A. it is quite easy to breathe the air in Milan
B. it is dangerous to breathe the air in Milan
C. it is impossible to travel in Milan without a gas mask
D. it is funny to travel in Milan with a gas mask
查看习题详情和答案>>仔细阅读下面的短文，短文中有10个空格或划线句子。请按照每小题括号内的具体要求完成语法填空、词形变化、句子合并、句子改写以及病句改正等。答案填写在标号为1～10的对应位置。
When I was about twelve, I 1 (sudden)developed great interest in writing poetry．If a lesson 2 (助动词)not interest me, I would take out 3 (人称代词)notebook and start writing poems in class．One day 4 (连词)I was busy write a poem in a geography lesson．I looked up find the teacher 5 (动词词组)．He tore the poem up, warning me not 6 (不定式)time in his class．I had written such a good poem 7 (固定句型)in the evening I wrote 8 (宾语)out again from memory．Weeks later, I 9 (read)about a poetry contest and I decided to send out my poem．After a month, I got a letter informing me I had won 10 (冠词)first prize．Everyone at school was glad, except the geography teacher．