Crop failures in desert areas have been a of life for thousands of years. [ ] A．partB．matter C．realD．fact 题目和参考答案——青夏教育精英家教网—

题目内容

Crop failures in desert areas have been a ________ of life for thousands of years.

[　　]

A．part

B．matter

C．real

D．fact

答案：D

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　　During the early years of this century, wheat was seen as the very lifeblood of Western Canada. When the crops were good , the economy was good ; when the crops failed , there was depression. People on city streets watched the fields and the price of wheat with almost as much feeling as if they were growers. The marketing of wheat became an increasingly favorite topic of conversation.

　　War set the stage for the most dramatic events in marketing the western crop. For years, farmers mistrusted speculative grain selling as carried on through the Winnipeg Grain Exchange. Wheat prices were generally low in the autumn, but farmers could not wait for markets to improve. It had happened too often that they sold their wheat soon after harvest when farm debts were coming due, only to see prices rising and speculators getting rich. On various occasions, producer groups asked for firmer controls , but governments had no wish to become involved , at least not until wartime wheat prices threatened to run wild.

　　Anxious to check inflation and rising living costs, the federal government appointed a board of grain supervisors to handle deliveries from the crops of 1917 and 1918. Grain Exchange trading was suspended , and farmers sold at prices fixed by the board. To handle the crop of 1919 , the government appointed the first Canadian Wheat Board, with full authority to buy, sell and set prices.

1．What is the main purpose of the passage?

[　　]

A．To explain how wheat is marketed today.

B．To justify suspension of trading on the Grain Exchange.

C．To describe the origins of the Canadian Wheat Board.

D．To argue for further reforms on the Canadian Wheat Board.

2．According to the passage , most farmers debts had to be paid ________.

[　　]

A．when the autumn harvest had just been completed

B．because markets started to improve

C．as soon as the Winnipeg Grain Exchange demanded payment

D．unless crop failure caused depression

3．According to the passage, wheat prices became unmanageable because of conditions caused by ________.

[　　]

4．In Paragraph 3 , the word “check” could best be replaced by which of the following?

[　　]

5．According to the passage, a preliminary （初步的） step in the creation of the. Canadian Wheat Board was the appointment of ________.

[　　]

A．the Winnipeg Grain Exchange

B．a board of supervisors

C．several producer groups

D．a new government

阅读下列短文，从每题所给的四个选项中，选出最佳选项。

　　During the early years of the 20th century，wheat was seen as the very lifeblood of Western Canada．When the crops were good，the economy was good； when the crops failed，there was depression．People on city streets watched the yields and the Price of wheat with almost as much feeling as if they were growers．The marketing of wheat became an increasingly favorite topic of conversation．

　　War set the stage for the most dramatic events in marketing the western crop．For years，farmers mistrusted speculative grain selling as carried on through the Winnipeg Grain Exchange．Wheat prices were generally low in the autumn，but farmers could not wait for markets to improve．It had happened too often that they sold their wheat soon after harvest when farm debts were coming due，only to see prices rising and speculators getting rich．On various occasions，producer groups asked for farmer controls，but governments had no wish to become involved，at least not until wartime wheat prices threatened to run wild．

　　Anxious to check inflation and rising living costs，the federal government appointed a board of grain supervisors to handle deliveries from the crops of 1917 and 1918 Grain Exchange trading was suspended，and farmers sold at prices fixed by the board．TO handle the crop of 1919，the government appointed the first Canadian Wheat Board，with full authority to buy，sell and set prices．

1．What is the main purpose of the passage？

[　　]

A．To explain how wheat is marketed today．

B．To justify suspension of trading on the Grain Exchange．

C．To describe the origins of the Canadian Wheat Board．

D．To argue for further reforms on the Canadian Wheat Board．

2．According to the passage，most farmers'debts had to be paid________．

[　　]

A．when the autumn harvest had just been completed

B．because markets started to improve

C．as soon as the Winnipeg Grain Exchange demanded payment

D．unless crop failure caused depression

3．According to the passage，wheat prices became unmanageable because of

conditions caused by________．

[　　]

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.

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

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

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

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

Infrared scanning technology may be brought back into operation because of_____________.

　　A. the desire of farmers to improve the quality of their produce

　　B. growing concern about the excessive use of pesticides on crops

　　C. the forceful promotion by the Department of Agriculture

　　D. full support from agricultural experts

Even plants 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 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 colourcoded map showing where plants were running “fevers”. Farmers could then spotspray, 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 longterm 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 if Paley finds the financial backing which he failed to obtain 10 years ago.
【小题1】Plants will send out an increased amount of heat when they are________.

A．facing an infrared scanner

B．sprayed with pesticides

C．in poor physical condition

D．exposed to excessive sun rays

【小题2】In order to apply pesticide spraying precisely, we can use infrared scanning to________.

A．estimate the damage to the crops

B．draw a colourcoded map

C．measure the size of the affected area

D．locate the problem area

【小题3】Farmers can save a considerable amount of pesticide by________.

A．resorting to spotspraying

B．transforming poisoned rain