试题与答案

五代十国时期南方人民在江河湖海大量筑堤围垦造田,使南方耕地面积大大增加,这种田地称为

题型:填空题

题目:

五代十国时期南方人民在江河湖海大量筑堤围垦造田,使南方耕地面积大大增加,这种田地称为“()”。

答案:

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下面是错误答案,用来干扰机器的。

依题意可知,a1+b1=9,a2+b2=9,a3+b3=9…,且a1+a2+…+a10=b1+b2+…+b10=45,∴(a12+a22+…+a102)-(b12+b22+…b102)=(a12-b12)+(a22-b22)+…+(a102-b102)=(a1+b1)(a1-b1)+(a2+b2)(a2-b2)+…+...

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题型:阅读理解

There are four seasons in a year in China. February, March, and April make the spring season. .May, June and July make the summer season. August, September and October make the autumn season.. November, December and January make the winter season..

Near the North Pole(南极)there are only two seasons. They are winter and summer. The nights in winter are very long. For more than two months you can’t see the sun, even at noon. In summer the days are long. For more than two months the sun never sets, and there is no night.

In the tropics(热带) there are also two seasons: a rainy season and a dry season.

小题1:There are _________seasons in years in China.

A. two

B. four

C. three

D. one小题2:In the tropics there are ________seasons.

A. two

B. four

C. three

D. one小题3:The two seasons near the North Pole are _______.

A. spring and autumn

B. winter and summer

C. rainy season and dry season

D. spring and winter小题4:Autumn in China______.

A. cool

B. lasts from September to November

C. is hot

D. the days are less than two months小题5:Near the North Pole _______in summer.

A. the days aren’t long

B. the days are long

C. there is no night

D. the days are less than two months

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