问题 单项选择题

科学常识告诉我们:时间是有方向性的,总是从过去向未来流动。这就是时间之箭。在生物进化过程中,时间的过去与未来是不对称的,这是一个不可逆过程。但生物进化的时间箭头与熵增不同。熵增意味着退化,即旧事物的分解和衰亡;而进化是新事物的产生和发展,它的时间箭头是指向熵减的。
这段话支持了一个论点,即( )。

A.生物的进化只有一个方向

B.生物的演化可分为退化和进化两大类

C.生物进化过去用的时间短,未来用的时间长

D.熵的变化是没有方向性的

答案

参考答案:B

解析: 题干的主要意思是,生物进化的箭头与时间之箭头不同。生物进化存在熵增和熵减两种方式。故选B。

单项选择题
阅读理解

B

Have you ever been to the beautiful country of Holland and its capital Amsterdam? Anyone who has traveled to Amsterdam would probably agree on one thing: Amsterdam’s story is a tale of two cities—one during the day and a completely different one at night.

  During the day, the largest city in Holland sits quietly on the Amstel River. You can rent a bicycle, visit the Van Gogh or Anne Frank museum, or take a water taxi. But when the sun goes down, the partying begins. In the big clubs and in coffee shops, tourists gather to hang out, talk politics and smoke.

  Several areas of the city clearly show the two worlds that rule Amsterdam. And they’re all within a short taxi ride of each other. For example, Dam Square attracts daytime sightseers to its festivals, open markets, concerts and other events. Several beautiful and very popular hotels can be found there. And there’s the Royal Palace and the Magna Plaza shopping mall.

But at night party-seekers come to the square. Hip hop or funk music is heard there. So if you come, be ready to dance. The clubs don’t close down until 4 am.

And while you’re there, check out the various inexpensive ways to tour the city. Don’t worry about getting lost. Although Dutch is the official language, most people in Amsterdam speak English and are happy to help you with directions. And you’ll notice that half the people in the streets are on bicycles they rent.

  Amsterdam also has a well-planned canal system. For about 10 dollars, you can use the canal bus or a water taxi to cruise (巡游) the "Venice of the North".

 The city has a historic past. One impressive place to visit is the Anne Frank House on Nine Streets. It was there that the young Jewish girl wrote her famous diary during World War II. Visitors can view Anne’s original diary and climb behind the bookcase to the room where she and her family hid from the Nazis for two years.

59. The following means of transport are available to visitors in Amsterdam EXCEPT __________.

A. a carriage.                B. a bicycle.                 C. a canal bus.                     D. a water taxi.

60. When getting lost, a visitor can ask natives for directions in           .

A. only Dutch             B. Dutch or English              C. only English          D. Spanish and English

61. What can you learn about by visiting the Anne Frank House?

A. The happy experience of a girl survivor.     B. The glorious past of Amsterdam.

C. The hard life of the Jewish in World WarⅡ.    D. The hobbies of the Dutch.

62. The passage is intended to           .

A. call up people’s memories of World WarⅡ    

B. tell readers what A Tale of Two Cities is about

C. instruct visitors what to do and see in Holland

D. offer readers some information about Amsterdam