题目内容
（请给出正确答案）
A．They might pay less tax.
B．They might pay more tax.
C．They might have fewer children.
D．They might pay some amount of tax.
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| There are many talented writers waiting_________. A. to discover B discovered C. to be discovered D. being discovered |
A、influence
B、prevent
C、cause
D、reduce
A、question
B、demand
C、query
D、search
B．By different voices.
C．By different face colours.
D．By different names.
B．It only offers headlines and tops of articles.
C．Its black-and-white screen isn"t big enough.
D．The pages don"t appeal to the readers much.
B．They are cheap and popular.
C．They are translated into English.
D．They are convenient for the users.
B．When the food colour changes.
C．When they move to different places.
D．When they are attracted by different smells.
So why is this huge increase in population taking place？ It is really due to the spread of the knowledge and practice of what is becoming known as "Death Control". You have no doubt heard of the term "Birth Control". "Death Control" is something rather different. It recognises the work of the doctors and scientists who now keep alive people who, not very long ago, would have died of a variety of then incurable diseases. Through a wide variety of technological innovations that include farming methods and the control of deadly diseases, we have found ways to reduce the rate at which we die. However, this success is the very cause of the greatest threat to mankind.
If we examine the amount of land available for this ever-increasing population, we begin to see the problem. If everyone on the planet had an equal share of land, we would each have about 50,000 square metres. This figure seems to be quite encouraging until we examine the amount of usable land we actually have. More than three-fifths of the worlds land cannot produce food.
Obviously, with so little land to support us, we should be taking great care not to reduce it further. But we are not! Instead, we are consuming its "capital" — its nonrenewable fossil fuels and other mineral deposits that took millions of years to form. but which are now being destroyed in decades. We are also doing the same with other vital resources not usually thought of as being nonrenewable such as fertile soils, groundwater and the millions of other species that share the earth with us.
It is a very common belief that the problems of the population explosion are caused mainly by poor people living in poor countries who do not know enough to limit their reproduction. This is not true. The actual number of people in an area is not as important as the effect they have on nature. Developing countries do have an effect on their environment, but it is the populations of richer countries that have a far greater impact on the earth as a whole.
According to the passage, what contributes to the population increase？
A．Human beings" ignorance.
B．The failure of "Birth Control".
C．The success of "Death Control".
D．Technological innovations.
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