问题 选择题

第二次世界大战以后,美国通过大量技术投入和大规模专业化生产,成为世界最大的大豆生产国和出口国。巴西自20世纪70年代开始种植大豆,在积极培育优良品种的同时,鼓励农民组建农场联合体,实现了大豆的规模化生产和经营。目前,巴西的大豆产量、出口量仅次于美国。中国曾是世界最大的大豆生产国和出口国,近些年大豆的质量下降(品种退化,出油率低),生产成本较高,成为世界最大的大豆进口国。据此完成1—3题。

1、巴西大豆总产量增加的潜力大于美国,主要是因为巴西[ ]

A.技术力量较雄厚

B.气候条件较优越

C.可开垦的土地资源较丰富

D.劳动力较充足

2、在国际市场上,巴西大豆价格低于美国的主要原因是巴西[ ]

A.专业化水平较高

B.科技投入较大

C.劳动生产率较高

D.劳动力价格较低

3、中国要提高大豆质量亟需[ ]

A.加大科技投入

B.扩大种植面积

C.增加劳动力投入

D.加大化肥使用量

答案

1、C

2、D

3、A

单项选择题

Although there are many skillful Braille readers, thousands of other blind people find it difficult to learn that system. They are thereby shut (1) from the world of books and newspapers, having to (2) on friends to read aloud to them.

A young scientist named Raymond Kurzweil has now designed a computer which is a major (3) in providing aid to the (4) .His machine, Cyclops, has a camera that (5) any page, interprets the print into sounds, and then delivers them orally in a robot-like (6) through a speaker. By pressing the appropriate buttons (7) Cyclops’s keyboard, a blind person can "read" any (8) document in the English language.

This remarkable invention represents a tremendous (9) forward in the education of the handicapped. At present, Cyclops costs $ 50,000. (10) , Mr. Kurzweil and his associates are preparing a smaller (11) improved version that will sell (12) less than half that price. Within a few years, Kurzweil (13) the price range will be low enough for every school and library to (14) one. Michael Hingson, Director of the National Federation for the Blind, hopes that (15) will be able to buy home (16) of Cyclops for the price of a good television set.

Mr. Hingson’s organization purchased five machines and is now testing them in Maryland, Colorado, Iowa, California, and New York. Blind people have been (17) in those tests, making lots of (18) suggestions to the engineers who helped to produce Cyclops.

"This is the first time that blind people have ever done individual studies (19) a product was put on the market," Hingson said. "Most manufacturers believed that having the blind help the blind was like telling disabled people to teach other disabled people. In that (20) , the manufacturers have been the blind ones.

4()

A.paralyzed

B.uneducated

C.invisible

D.sightless

单项选择题