问题 填空题

人类基因组计划(HGP)研究的染色体数目为______条.

答案

人体内每个细胞内有23对染色体;包括22对常染色体和一对性染色体,性染色体包括:X染色体和Y染色体.含有一对X染色体的受精卵发育成女性,而具有一条X染色体和一条Y染色体者则发育成男性.即男性染色体的组成:22对常染色体+XY,女性染色体的组成:22对常染色体+XX,因此人类基因组计划要测定的人类染色体数应该是22条常染色体和两条性染色体X和Y,即24条.

故答案为:24.

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Section B

Directions: Read the following four passages. Each passage is followed by several questions or unfinished statements. Choose the one that fits best according to the information given in  the passage you have just read.

(A)

Matsushita, the world’s largest provider of consumer electronics, has decided to move in on Hollywood. Last weekend, Matsushita company leaders met with movies VIPs from MCA, Inc., the entertainment community that produced the movies as “Jaws” and “E.T. the Extra-terrestrial”. If the negotiations are successful, Matsushita will pay somewhere between $6 billion and $7.5 billion for MCA, by far the largest U.S. buying by a Japanese company.

The deal is larger than last year’s $5 billion buying of Columbia Pictures by Matsushita’s competitor, Sony Corporation. The movement by the Japanese companies shows Tokyo’s growing interest in the entertainment world. It is surprising for both sides of the Pacific Ocean. Why does a disciplined, no-nonsense nation like Japan want to get into show business? The answer is quite simple: To make money. Japanese corporation leaders feel the global potential of the entertainment business and recognize that there is an increasing market for movies and television in the rapidly industrializing world.

1.    The movement of buying American entertainment companies by the Japanese shows       that____     _.

A. American movies are better than Japanese

B. Japan has growing interest in the entertainment world

C. Japanese market is larger than American market

D. Japanese people are richer

2.    A disciplined nation like Japan wants to get into show business because _____

A. they want to make money

B. they want to learn from American people

C. they want to entertain their people

D. they want to win in the competition

3.    Matsushita would pay ______ for MCA.

A.$5 billion

B.$6 billion

C.$7.5 billion

D. Somewhere between $6 billion to $7.5 billion

选择题