54．The application of infrared scanning technology to agriculture met with some difficulties

_______________.

A. the lack of official support　　 　

B. its high cost

C. the lack of financial support　 　　

D. its failure to help increase production

53．Farmers can save a considerable amount of pesticide by______________.

A. resorting to spot-spraying　　　　

B. consulting infrared scanning experts

C. transforming poisoned rain　 　　

D. detecting crop problems at an early stage

52．In order to apply pesticide spraying precisely, we can use infrared scanning to____________.

A. estimate the damage to the crops　

B. measure the size of the affected area

C. draw a color-coded map　　　　　

D. locate the problem area

51．Plants will emit an increased amount of heat when they are______________.

A. sprayed with pesticides　　　　　

B. facing an infrared scanner

C. in poor physical condition　　　　

D. exposed to excessive sun rays

50. A。意义猜测题。从第五段可知，模特这个职业有时会被人瞧不起， 从四个选项看只有

A项符合题意。

C(words:303&194)

　Even plant can run a fever, especially when they’re under attack by insects or disease. But unlike human, plants can have their temperature taken from 3, 000 feet away straight up. A decade ago, adopting the infrared (红外线)scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide (杀虫剂)spraying rather than rain poison on a whole field, which invariably includes plants that don’t have pest (害虫)problems.

　Even better, Paley’s Remote Scanning Services Company could detect crop problems before they became visible to the eye. Mounted on a plane flown at 3, 000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a color-coded map showing where plants were running“fevers”. Farmers could then spot-spray, using 50 to 70 percent less pesticide than they otherwise would.

　The bad news is that Paley’s company closed down in 1984, after only three years. Farmers resisted the new technology and long - term backers were hard to find. But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to get back into operation. Agriculture experts have no doubt the technology works. “This technique can be used on 75 percent of agricultural land in the United States, ” says George Oerther of Texas A & M. Ray Jackson , who recently retired from the Department of Agriculture, thinks remote infrared crop scanning could be adopted by the end of the decade. But only ff Paley finds the financial backing which he failed to obtain 10 years ago.

49. C。主旨大意题。作者认为虽然模特职业是很风光，但不是每一个模特都能成功的，尤

其是文章最后一句话点明了主题。

47. D。推理判断题。从第三自然段no model will get very far without a clever agent可知答案。

48 C。细节理解题。从第五自然段Immigration officials at airport look suspiciously at a girl

whose passport shows her occupation as “Model”可知答案。

46. A。细节理解题。从第四自然段Intelligence, qualifications and personal characteristics count

for little against good looks and tight figures.可知答案。

50. The underlined word “suspiciously” can most probably be replaced by _________________.

　 　A. doubtfully　　　 B. excitedly　　　　 C. proudly　　　　 D. sadly

[答案与解析]　 46-50 ADCCA

本文作者认为虽然模特职业是很风光，但不是每一个模特都能成功的，模特这个职业有

时会被人瞧不起。

49. What may be the author’s attitude towards modeling?

　 　A. It is a worthwhile life for a young lady or a young man.

　 　B. He is in favor of young people to try modeling.

C. Before being crazy about a model job, young people should be aware of the difficulties.

　 　D. It is a field in which everyone has a great chance to succeed.