[单项选择]The North Pole is surrounded by land, while the South Pole is surrounded by the Antarctic Ocean. So scientists thought that______.

A. most of the ice melted in the Northern hemisphere
B. most of the ice melted in the Southern hemisphere
C. The North Pole is colder than the South Pole
D. The South Pole is colder than the North Pole

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[单项选择]Farmers can make good use of some land while other areas nearby are less attractive, or even ______ them.
A. compel
B. propel
C. expel
D. repel

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[单项选择]The child（）while watching TV, so his mother put him to bed at once.
A. had fallen asleep
B. was falling asleep
C. fell asleep
D. falls asleep

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[单项选择]Only by making wise use of land______ to find a solution to the problem of hunger and famine.
A. we can be
B. we will be able
C. will we be able
D. can we

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[单项选择]While ______ in Paris, the old artist picked up some French.
A. staying
B. stay
C. stayed
D. to stay

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[单项选择]while和do-while循环的主要区别是
A. do-while的循环体至少无条件执行一次
B. while的循环控制条件比do-while的循环控制条件更严格
C. do-while允许从外部转到循环体内
D. do-while的循环体不能是复合语句

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[单项选择]It is delight to fly at the Pole because there _______.

A. planes fly higher than at the equator
B. the eyes can reach about 4,000 meters
C. planes are clear of bad weather
D. planes fly more quickly than at the equator

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[单项选择]He （） along pole in the center of the field, and on the top of it I hung the lamp.
A. put up
B. put out
C. put on
D. put up with

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[单项选择]At Leo's Lumberyard, an 8-foot long wooden pole costs $3.00. At this rate, what is the cost, in cents, of a pole that is 16 inches long
A. 0.5
B. 48
C. 50
D. 64
E. 96

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[单项选择]C语言中while和do-while循环的主要区别是
A. do-while的循环体至少无条件执行一次
B. while的循环控制条件比do-while的循环控制条件更严格
C. do-while允许从外部转到循环体内
D. do-while的循环体不能是复合语句

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