问题 单项选择题

假如地轴与黄道相交成90°,那么,当地球自转和公转时,可能发生的现象是()

A.太阳直射点将在南北极点之间来回移动

B.全球任何地方得到的太阳热量均相等

C.全球任何纬度全年都昼夜平分

D.地球上任何地方都有四季变化

答案

参考答案:C

解析:

地轴与黄道面相交的角度为90°,太阳只直射在赤道上,太阳辐射能量仍然从赤道向两极递减,故AB错误;太阳直射赤道,全球昼夜平分,故C正确;直射点固定,全球无四季变化,故D错误。

考点:地球公转地理意义。

阅读理解

June 8, 2013
Dear Cindy,
I’m sorry to hear that Bird Flu (禽流感) is very serious in some parts of the world and some people have got the flu. We must take good care of ourselves and keep away from the disease. Could you tell me what people in China do to keep away from it?
Please write to me soon.
Yours,
Betty
July 2, 2013
Dear Betty,
I think Bird Flu is very bad. Many chickens, ducks and birds in our country got the disease. Some of them died, but some birds flew away and they might carry germs(细菌) to other places. This is a serious problem. We must do something to solve it. Let me tell you what people have to do to keep away from the disease.
* Do morning exercises every day.
* Open the windows in the morning.
* Wash hands very often.
* Eat more vegetables and less meat.
* Go to bed early.
I think these are good for our health. Do you think so?
Yours,
Cindy
根据短文内容,选择正确答案。(每小题1分,共5分)
小题1:From the letter we know Cindy comes from _______.
A. Canada   B. the U. S. A.     C. China    D. Japan
小题2:Betty wrote her an e-mail to ask _______.
A.whether Cindy got Bird Flu
B.how to keep away from Bird Flu
C.when Bird Flu began to spread传播
D.how Bird Flu spread in Cindy’s country
小题3:A hard problem to fight Bird Flu is _______.
A.we don’t have better doctors or nurses
B.Bird Flu is serious
C.some places are still poor
D.birds with the germs will carry germs to other places
小题4:What does the underlined word “solve” mean in Chinese?
A.解决B.分析C.通告D.治愈
小题5:From Cindy’s letter, we know _______ is bad for our health.
A.washing hands very often
B.going to bed late every day
C.eating more vegetables and less meat
D.opening the windows in the morning
名词解释