问题 选择题

2011年9月29日,我国在酒泉卫星发射中心用长征二号F运载火箭将天宫一号目标飞行器发射升空.11月初,神舟八号飞船也将发射升空,在太空中与天宫一号交会对接——这将使我国成为世界上第三个掌握空间交会对接技术的国家.关于飞船与天宫一号对接问题,下列说法正确的是

A.先让飞船与天宫一号在同一轨道上,然后让飞船加速,即可实现对接

B.先让飞船与天宫一号在同一轨道上,然后让飞船减速,即可实现对接

C.先让飞船进入较低的轨道,然后再对其进行加速,即可实现对接

D.先让飞船进入较高的轨道,然后再对其进行加速,即可实现对接

答案

答案:C

飞船加速后会发生离心运动,轨道半径增大,AB错;同理D错;C对;

单项选择题
阅读理解

Almost all cultures celebrate the end of one year and the beginning of another in some way. Different cultures celebrate the beginning of a new year in different ways, and at different times on the calendar.

In western countries, people usually celebrate New Year at midnight on January 1st. People may go to parties, dress in formal clothes—like tuxedos(小礼服)and evening gowns, and drink champagne at midnight. During the first minutes of the New Year, people cheer and wish each other happiness for the year ahead. But some cultures prefer to celebrate the New Year by waking up early to watch the sun rise. They welcome the New Year with the first light of the sunrise.

It is also a common Western custom to make a New Year’s promise, called a resolution. New Year’s resolutions usually include promises to try something new or change a bad habit in the new year.

Many cultures also do special things to get rid of bad luck at the beginning of a new year. For example, in Ecuador, families make a big doll from old clothes. The doll is filled with old newspapers and firecrackers. At midnight, these dolls are burned to show the bad things from the past year are gone and the new year can start afresh (again). Other common traditions to keep away bad luck in a new year include throwing things into rivers or the ocean, or saying special things on                the first day of the new year.

Other New Year traditions are followed to bring good luck is to eat grapes on New Year’s Day. The more grapes a person eats, the more good luck the person will have in the year. In France, people eat pancakes for good luck at New Year. In the United States, some people eat black– eyed peas(豇豆)for good luck——but to get good luck for a whole year you have to eat 365 of them!

小题1:Which culture celebrates New Year in the morning?

A.The United States.

B.Spain.

C.France.

D.The passage doesn’t say.小题2:According to the third paragraph, what is a resolution?

A.Something you burn.

B.Something you eat.

C.Something you say.

D.Something you wear.小题3:What is the topic of the fourth paragraph?

A.Bringing good luck.

B.Keeping away bad luck.

C.Planning for the next year.

D.Remembering the past.小题4:Which is probably true about eating black – eyed peas on New Year?

A.Black-eyed peas taste bad.

B.The peas are very difficult to cook.

C.One pea brings one day of luck.

D.It is bad luck to eat a lot of black-eyed peas.