题目内容
（请给出正确答案）
Farmers should not be blamed for the rise because______.
A．they produce the vegetables and other things
B．they get only a small share in the profit
C．they work very hard
D．their cost of living has also risen
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更多“Farmers should not be blamed for the rise because______.A．they produce the vegetables and”相关的问题
A.should
B.would
C.might
D.could
A、It should
B、Will it
C、Should it
D、When it will
5：Farmers should not be blamed for the rise because______.
A.they produce the vegetables and other things
B.they get only a small share in the profit
C.they work very hard
D.their cost of living has also risen
Which of the following is NOT included in the scientists’suggestions？
A．Farmers should use less insecticides.
B．Farmers should use a combination of two or three insecticides at once.
C．At certain times of the year, farmers should actually try to attract new insects onto the crops they are trying to protect.
D．Farmers should regularly spray crops as a precaution against problems that are caused by large numbers of pests.
The work of a completely uneducated farmer is as important as a professor because______.
A．without education all of us would live a more meaningless life
B．without farmers we would have to grow crops ourselves
C．without farmers we should die of food shortage
D．without farmers we would have to do housework ourselves
A．not to visit the Farmers'Market
B．not to make a noise or wear hats
C．to care for the wildlife and water
D．to look for rubbish and take it away
What should be done？ Scientists studying the problem suggest that farmers use less insecticides. At the moment, farmers regularly spray crops as a precaution against problems that are caused by large numbers of pests. They should, instead, spray only where pests have actually been seen. Secondly, farmers could use a combination of two or three insecticides at once. To survive, the insects would need to become resistant to two or more insecticides at the same time.
The most surprising suggestion, perhaps, is that at certain times of the year, farmers should actually try to at-tract insects onto the crops they are trying to protect. The new insects will mate with those which survived from a certain kind of insecticide and will lessen the latter's resistance to it.
Scientist hope that these and other measures will post-pone the day when farmers and scientists will have to stand by while new super-bugs which may be resistant to all poi-sons invade our farms and devour our crops.
What conclusion can be drawn from the scientists' observation？
A．Insects have developed some sort of resistance to man-made poisons.
B．Insects have been eating plants for about 250 million years.
C．Farmers sometimes use a combination of two or three insecticides at once.
D．New insects mate with insects which survived from a certain kind of insecticide.
What should be done？ Scientists studying the problem suggest that farmers use less insecticides. At the moment, farmers regularly spray crops as a precaution against problems that are caused by large numbers of pests. They should, instead, spray only where pests have actually been seen. Secondly, farmers could use a combination of two or three insecticides at once. To survive, the insects would need to become resistant to two or more insecticides at the same time.
The most surprising suggestion, perhaps, is that at certain times of the year, farmers should actually try to attract new insects onto the crops they are trying to protect. The new insects will mate with those which survived from a certain kind of insecticide and will lessen the latter's resistance to it.
Scientists hope that these and other measures will postpone the day when farmers and scientists will have to stand by while new super-bugs which may be resistant to all poisons invade our farms and devour our crops.
(33)
A．Insects have developed some sort of resistance to man-made poisons.
B．Insects have been eating plants for about 250 million years.
C．Farmers sometimes use a combination of two or three insecticides at once.
D．New insects mate with insecticide-surviving insects.
听力原文： Scientists have observed that plants themselves produce many poisonous chemicals for defence against insects. But insects have developed ways of dealing with them and, in fact, have been eating plants for about 250 million years. Now insects are using these same mechanisms to deal with man-made poisons--insecticides. This is why resistance of insects to insecticides has developed so rapidly.
What should be done？ Scientists studying the problem suggest that farmers use less insecticides. At the moment, farmers regularly spray crops as a precaution against problems that are caused by large numbers of pests. They should, instead, spray only where pests have actually been seen. Secondly, farmers could use a combination of two or three insecticides at once. To survive, the insects would need to become resistant to two or more poisons at the same time.
The most surprising suggestion, perhaps, is that, at certain times of the year, farmers should actually try to attract new insects onto the crops they are trying to protect. The new insects will mate with those which survived from a certain kind of insecticide and will lessen the latter's resistance to it.
Scientists hope that these and other measures will postpone the day when farmers and scientists will have to stand by while new super-bugs which may be resistant to all our poisons invade our farms and eat our crops.
(33)
A．Plants can produce some poisonous chemical for defence against insects.
B．Insects have been eating plants for many million years.
C．Insects have developed ways of dealing with poisonous chemicals produced by plants themselves.
D．Insects have already developed some resistance to man-made poisons.
听力原文： (32)Scientists have discovered that plants themselves produce many poisonous chemicals for defense against insects. But insects have developed ways of dealing with them. Guess how many years have the insects been eating plants. The number itself will scare you. (33) In fact, insects have been eating plants for as many as 250 million years. Now insects are using these same mechanisms to deal with man-made poisons—insecticides. This is why resistance of insects to insecticides has developed so rapidly.
What should be done？ Scientists studying the problem suggest (34) that farmers use less insecticides. At the moment, farmers (34)regularly spray crops as a precaution against problems that are caused by large numbers of pests. They should, instead, spray only where pests have actually been seen. Secondly, (34)farmers could use a combination of two or three insecticides at once. To survive, the insects would need to become resistant to two or more insecticides at the same time.
The most surprising suggestion, perhaps, is that at certain times of the year, farmers should actually try to attract new insects onto the crops they are trying to protect. The new insects will mate with those which survived from a certain kind of insecticide and will lessen the latter's resistance to it.
(35) Scientists hope that these and other measures will postpone the day when farmers and scientists will have to stand by while new super-bugs which may be resistant to all poisons invade our farms and devour our crops.
(33)
A．Insects have developed some sort of resistance to man-made poisons.
B．Insects have been eating plants for about 250 million years.
C．Farmers sometimes use a combination of two or three insecticides at once.
D．New insects mate with insecticide-surviving insects.
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