问题 选择题

关于等温线的叙述,正确的是(  )

A.等温线密集的地方气温差别小

B.等温线稀疏的地方气温温差大

C.同一条等温线上各点的气温相同

D.等温线上的各点的气温不相同

答案

等温线是地图上气温相同的点连成的线.在同一条等温线上,各点的气温是相同的.等温线数值大,表示气温高.等温线数值小,表示气温低.等温线稀疏,则各地气温相差不大,等温线密集,表示各地气温相差悬殊,等温线平直,表示影响气温分布的因素较少.等温线弯曲,表示影响气温分布的因素很多.等温线呈封闭状曲线地区,受地形影响,形成暖热或寒冷中心.

故选:C.

阅读理解

阅读理解。

     In the United States, sixteen, eighteen and twenty-one are important ages in a person's life. There are no

special celebrations for these birthdays, but each is a time when a person can do new things. That shows

how she is no longer a child and has made the transition to adulthood.

     In the United States,after turning sixteen a person can work, get a driver's license, and leave home.

Sometimes the laws don't seem to make sense (表明): at eighteen people in the United States can have a vote

and join the army. But people are prohibited (禁止) from going into many nightclubs, buying drinks like beer

or wine until they are twenty-one.

     In many Latin American countries, a young woman's fifteenth birthday is important. At this age, she is no

longer considered to be a girl, but rather a woman. To mark this special day,families with fifteen-year-old

daughters have a celebration. The day begins with the young woman and her family going to church. Later,

there is a party and many guests are invited.

     In Japan, boys and girls are considered to be adults at the age of twenty. At this age, they are allowed by

law to vote, drink wine, and smoke. The second Monday in January is a national holiday called "Coming of

Age Day". On this day, twenty-year-olds celebrate by first going to a shrine (神庙) with their families. Later,

they listen to speeches given by city and school leaders. After that, many get together with family late into the

night.

     In some countries, birthday celebrations continue throughout adulthood. Some people celebrate their

fortieth and fiftieth birthdays, or the year when they retire, with a big party.

1. What does the word transition mean in Chinese?

A. 结束

B. 转变

C. 开始

D. 增加

2. In the USA, at which age can a person be allowed to drink wine?

A. Sixteen.

B. Eighteen.

C. Twenty.

D. Twenty-one.

3. Where do people regard a 15-year-old girl as a woman?

A. In Latin America. 

B. In Japan.

C. In the United States.

D. In Europe.

4. Which of the following activities is NOT mentioned on Coming of Age Day?

A. Going to a shrine. 

B. Listening to speeches.

C. Going to church. 

D. Getting together with family.

5. What's the main idea of the passage?

A. The age of adulthood is too young in some places but too old in others.

B. All over the world, people celebrate their each birthday till they retire.

C. There are special celebrations for 16th, 18th and 21st birthdays in every country.

D. There are special ages and celebrations that show a person is growing older.

单项选择题 A1/A2型题