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[主观题]
The pesticide manufacturers have organized an international federation called ______.
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更多“The pesticide manufacturers ha…”相关的问题
A．Food selling.
B．Food growing.
C．Food distribution.
D．Food manufacturing.
The pesticide DDT can be effective against ______.
A．malaria
B．animals
C．wildlife
D．human nervous system
The pesticide DDT can be effective against ______.
A．malaria
B．wildlife
C．animals
D．human nervous system
It can be inferred from the passage that ______.
A．it is estimated that there will be no food produced by conventional agriculture
B．people haven't been aware of the health benefits of reduced pesticide use
C．a genetic revolution will be one of methods to increase food supplies
D．GM food will be too expensive for people to accept
听材料，回答下列问题：
A.To describe ways pests can damage plants．
B.To examine the life cycle of corn plants．
C.To explain how corn plants develop．
D.To describe how a natural pesticide works．
We learn from the passage about Koch Industries that ______.
A．it signed contracts with others only on two issues
B．it believes markets can totally replace other forecasting techniques
C．its business includes goods trading, pesticide, fertilizers and chemical
D．it has applied prediction for less than a year
Currently there are some 20,000 chemicals in use, but the scientists only have detailed information on around 1,000 of them. To see the advantages of GM food you have only to consider the recent press revelation that the average lettuce(莴苣) receives eleven pesticide applications before it reaches the supermarket shelf. I'm sure chemicals and their role in disease will become a big issue in the next century, as the population of the developed world worries increasingly about its health.
The reason GM food will not go away is that we need a three-fold increase in food production by the year 2050 to keep pace with the world's predicted population growth to ten or eleven billion. It's not just a question of more mouths to feed either. What is often forgotten is that all these extra people will take up space, reducing the overall land available for agriculture.
The world has 800 million hungry people. Until now, food supplies have been increased by improved varieties, pesticides and artificial fertilizers: the green revolution. Now we're on the edge of a new revolution: a genetic one.
It may well be that in the long term it is the developing world that benefits most from GM foods. It's true that for the next ten years or so GM crops may be too expensive. But the lesson of personal computers is applicable here—once the technology has been developed for money—spinning crops, like maize(玉米) and cotton, it will filter down and become affordable for all. This doesn't mean, unfortunately, that famines will disappear, but severity and duration will be helped by an improved ability to produce and distribute food.
Why may GM foodstuffs be liked by people in the future？
A．Because they will be cheaper than conventional foodstuffs.
B．Because they will remove people's worries about taking many chemicals.
C．Because it will be more convenient for people to get them.
D．Because conventional foodstuffs will not be available in the future.
Currently there are some 20,000 chemicals in use, but the scientists only have detailed information around 1,000 of them.To see the advantages of GM food you have only to consider the recent press revelation that the average lettuce receives eleven pesticide applications before it reaches the supermarket shelf.I’m sure chemicals and their role in disease will become a big issue in the 21st century as the population of the developed world worries increasingly about its health.
The reason GM food will not go away is that we need a three-fold increase in food production by the year 2050 to keep pace with the world’s predicted population growth to ten or eleven billion.It’s not just a question of more mouths to feed either.What is often forgotten is that all these extra people will take up space, reducing the overall land available for agriculture.
The world has 800 million hungry people.Until now, food supplies have been increased by improved varieties, pesticides and artificial fertilizers: the green revolution.Now we’re on the edge of a new one: a genetic revolution.
It may well be that in the long term it is the developing world that benefits most from GM food.It is true that for the next years or so GM crops may be too expensive.
6. According to the passage, food supplies have been increased by all the following except_____________.
A.pesticides
B.artificial fertilizers
C.improved varieties
D.transportation
7.How many chemicals are still less familiar to the scientists？()
A.20,000.
B.1,000
C.19,000
D.21,000.
8.Why will people prefer GM food in the future？()
A.Because it uses less pesticides.
B.Because it is much cheaper.
C.Because the production is increased.
D.Because it is organic food.
9.Which of the following is NOT true？()
A.By 2050, the world population will grow to ten or eleven billion.
B.In the 21st century, GM food will take the place of conventional food.
C.More and more people will reduce the overall land available for farming.
D.More and more people will consume more food and occupy more space.
10.The author’s attitude towards GM food is _______.
A.negative
B.positive
C.critical
D.uncertain
