[单项选择]According to some estimates, at most for how long can we use the fossil fuel reserves
A. 20-50 years.
B. 50-100 years.
C. 100-120 years.
D. 200-500 years.

[单项选择]According to some estimates, at most for how long can we use the fossil fuel reserves
A. 20-50 years.
B. 50-100 years.
C. 100-120 years.
D. 200-500 years.

[填空题]According to the UN estimates, most countries in the world will experience negative population growth in 2040.

[填空题]How long does the most important part of the training course take
It takes ______.

[单项选择]How long will the man stay at home at most

[填空题]How long do most schools and colleges run in the year alto gether

[单项选择]

Ask most people how they define the American Dream and chances are they’ll say, "Success." The dream of individual opportunity has been at home in American since Europeans discovered a "new world" in the Western Hemisphere. Early immigrants like Hector St. Jean de Crevecoeur praised highly the freedom and opportunity to be found in this new land. His glowing descriptions of a classless society where anyone could attain success through honesty and hard work fired the imaginations of many European readers: in Letters from an American Farmer (1782) he wrote, "We are all excited at the spirit of an industry which is unfettered (无拘无束的) and unrestrained, because each person works for himself... We have no princes, for whom we toil (干苦力活), starve, and bleed: we are the most perfect society now existing in the world." The promise of a land where "the rewards of a man’s industry follow with equal steps the progress of his la
A. People are free to develop their power of imagination.
B. People who are honest and work hard can succeed.
C. People are free from exploitation and oppression.
D. People can fully enjoy individual freedom.

[填空题]The passage offers some advice on how to solve children rivalry at school.

[单项选择]A. Give her some advice on how to strike a bargain.
B. Introduce her to the local people.
C. Help her with the volunteer work.
D. Show her around the ancient cathedral city.

[单项选择]Speaker A: Could you give me some advice on how to prepare for the final
Speaker B:（）
A. Why don’t you go over the textbook before we discuss some questions
B. What course of action do you want me to recommend
C. I think it’ s an excellent suggestion, I’ll try my best.
D. The idea is not bad, yet I doubt if that would do my best.

[单项选择]Nobody yet knows how long and how seriously the shakiness in the financial system will the economy（）
A. knock down
B. drag down
C. settle down
D. put down

[单项选择]Nobody yet knows how long and how seriously the （）in the financial system will drag down the economy.
A. shallowness
B. shakiness
C. scantiness
D. stiffness

[单项选择]—Can I borrow some paper
—How ______ do you need
A. much
B. little
C. many