[单项选择]In 1931, Joseph Stalin invited George Washington Carver to superintend cotton plantations in southern Russia and to make a tour of the Soviet Union, but he refused.
A. supervise
B. cultivate
C. upgrade
D. discern

[单项选择]During the Second World War, Roosevelt, Stalin and Churchill met at ______.


A. Teheran, Yalta and Potsdam
B. Teheran and Yalta
C. Yalta, Potsdam and Berlin
D. Teheran and Potsdam

[单项选择]Who is George Mitchell


A. A representative of the IRA guerrillas.
B. A key player.
C. A former US Senator
D. A businessman and writer.

[单项选择]What has happened to George
A. He has had an accident.
B. He saw a serious accident.
C. He has gone to the hospital.
D. He’s decided to stay in the hospital for months.

[单项选择]Joseph is so brilliant that he always keeps some good ideas ______ his sleeve.


A. up
B. in
C. at
D. on

[单项选择]

Psychologist George Spilich and colleagues at Washington College in Chestertown, Maryland, decided to find out whether, as many smokers say, smoking helps them to "think and concentrate." Spilich put young non-smokers, active smokers and smokers deprived (被剥夺) of cigarettes through a series of tests.
In the first test, each subject (试验对象) sat before a computer screen and pressed a key as soon as he or she recognized a target letter among a grouping of 96. In this simple test, smokers, deprived smokers and non-smokers performed equally well.
The next test was more complex, requiring all to scan sequences of 20 identical letters and respond the instant one of the letters transformed into a different one. Non-smokers were faster, but under the stimulation of nicotine (尼古丁), active smokers were faster than deprived smokers.
In the third test of short-term memory, non-smokers made the fewest errors, but deprived smokers committed fewer errors than act
A. to test whether smoking has a positive effect on the mental capacity of smokers
B. to show how smoking damages people's mental capacity
C. to prove that smoking affects people's regular performance
D. to find out whether smoking helps people's short-term memory

[单项选择]From the passage, we know that Joseph Nollekens had used hollow busts ______.


A. to store a large fortune after he became rich
B. to hide things when he was doing illegal business
C. to contain pepper and salt that had stole
D. to let his wife keep trivial items

[单项选择]Which of the following is Not true about Joseph Nollekens


A. He was very stingy.
B. His appearance was always ragged.
C. His table manners were tolerable.
D. He was much admired during his time.

[单项选择]

When Mrs. Joseph Grudger died recently in Vienna, Austria, people asked the obvious question," why did she live to be 107" Tentative (推测性的)answers were provided by a survey conducted among148 Viennese men and women who had reached the age of 100. Somewhat surprising was the fact that the majority had lived most of their lives in cities. In spite of the city’s image as an unhealthy place, city living often provides benefits that country living can lack. One factor seems to be important to the longevity of those interviewed.
This factor is exercise. In the cities it is often faster and less frustrating to walk short distances than to wait for a bus. Even taking public transportation often requires some walking. Smaller apartment houses have no elevators, and so the people living there must climb stairs. City people can usually walk to local supermarkets. Since parking spaces are hard to find, there is often no alternative to walking.
On the o
A. age
B. weight
C. height
D. health