职称英语（卫生类）模拟试题（三）
Some plants have relative immunity to a great many diseases, while others have a susceptibility to them. The tolerance of a particular plant changes as the growing conditions change. A blight may be but a local infection easily controlled, on the other hand it can attack particular plants in a whole region or nation. An example is the blight which killed virtually every chestnut tree in North American. Another is the famous potato blight in Ireland in the last century. As a result of that, it was estimated that one million people died of starvation and related ailments.
Plant pathologists have made remarkable strides in identifying the pathogens of the various diseases. Bacteria may invade a plant through an infestation of insect parasites carrying the pathogen. A plant can also be inoculated by man. Other diseases might be caused by fungus which attacks the plant in the form of a mold or smut or rust. Frequently such a primary infection will weaken the plant so that a secondary infection may result from its lack of tolerance. The symptoms shown may cause an error in diagnosis, so that treatment may be directed toward bacteria which could be the result of a susceptibility caused by a primary virus infection.
36. How many diseases are known to attack wheat?
A. Around 30,000.
B. Around 140.
C. Around 29,960.
D. Around 40.
37. According to this passage, which of the following would a plant disease result in if it was left unchecked?
A. A world war.
B. Border conflicts.
C. Rations of grain and meat.
D. Social upheavals.
38. What is the main idea of the second paragraph?
A. Some plants have relative immunity to a great many diseases, while others have a susceptibility to them.
B. The tolerance of a particular plant changes as the growing conditions change.
C. A blight killed virtually every chestnut tree in North American.
D. A blight may be a national infection.
39. According to the passage, some plant diseases can be prevented by ______.
A. killing parasites
B. inoculation
C. killing insects
D. improving growing conditions
40. Which of the following statements is not true?
A. Some plant diseases many be caused by bacteria.
B. Some plant diseases many be caused by pathogens.
C. Some plant diseases many be caused by fungus.
D. Symptoms are always helpful in identifying diseases.
5.阅读理解：
Live with Computer
After too long on the Net, even a phone call can be a shock. My boyfriend's Liverpudlian accent suddenly becomes indecipherable after the clarity of his words on screen; a secretary's tone seems more rejecting than I'd imagined it would be. Time itself becomes fluid — hours become minutes, and alternately seconds stretch into days. Weekends, once a highlight of my week, are now just two ordinary days.
For the last three years, since I stopped working as a producer, I have done much of my work as a telecommuter. I submit articles and edit them via E-mail and communicate with colleagues on Internet mailing lists. My boyfriend lives in U.K.; so much of our relationship is computer-mediated.
If I desired, I could stay inside for weeks without wanting anything. I can order food, and manage my money, love and work. In fact, at times I have spent as long as three weeks alone at home, going out only to get mail and buy newspapers and groceries.
But after a while, life itself begins to feel unreal. I start to feel as though I've merged with my machines, taking data in, spitting them back out, just another node on the Net. Others on line report the same symptoms. We start to strongly dislike the outside forms of socializing. We have become the Net opponents' worst nightmare.
What first seemed like a luxury, crawling from bed to computer, not worrying about hair, and clothes and face, has become an avoidance, a lack of discipline. And once you start replacing real human contact with cyber-interaction, coming back out of the cave can be quite difficult.
41. Compared to the clear words of her boyfriend on screen, his accent becomes ______.
A. unidentifiable
B. unbearable
C. unreal
D. misleading
42. The passage implies that the author and her boyfriend live in ______.
A. different cities in England
B. different countries
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