请输入或粘贴题目内容
搜题
拍照、语音搜题，请扫码下载APP
题目内容
（请给出正确答案）
Land is becoming desert little by little because ______.
A．plants can't grow there
B．there is not enough rain
C．people haven't done what scientists wish them to do
D．scientists know little about the deserts
答案
更多“Land is becoming desert little by little because ______.A．plants can't grow thereB．there i”相关的问题
第1题
______is considered a landmark and a model of the 20th century poetry.
A．The Waste Land
B．The Anthology Des Imagists
C．Red Wheelbarrow
D．A Boy"s Wish
第2题
根据材料回答下列各题：
The main point of the passage is that_________．
A.humans are destroying thousands of species
B.there ale thousands of insect species
C.the sea is even richer in life than the land
D.coral reefs ale similar to rain forests
第3题
Some places on the earth don't get very much rain. But they still don't become deserts. This is because some green plants are growing there. Small green plants and grass are very important to dry places. Plants don't let the hot sun make the earth even drier. Plants don't let the wind blow the dirt(土)away. When a little bit of rain falls, the plants hold the water. Without plants, the land can become a desert much more easily.
Deserts ______.
A．get very little rain
B．never have any plants or animals in them
C．can all be turned into good land before long
D．both A and C
第4题
第5题
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.
第6题
请根据短文的内容，回答题。
Population and Our Planet
A very important world problem is the increasing number of people who actually inhabit this planet. The limited amount of land and land resources will soon be unable to support the huge population if it continues to grow at its present rate.＜br＞
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 recognizes 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.＜br＞
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 meters. This figure seems to be quite encouraging until we examine the amount of usable land we actually have. More than three-fifths of the world&39;s land cannot produce food.＜br＞
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.＜br＞
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 effec.t 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 article， what contributes to the population increase？ 查看材料
A.Birth explosion
B.Birth Control
C.Technological innovations
D.Death Control
第7题
Questionsare based on the following passage.
A very important world problem is the increasing number of people who actually inhab-it this planet. The limited amount of land and land resources will soon be unable to supportthe huge population if it continues to grow at its present rate.
So why is this huge increase in population taking place？ It is really due to the spread ofthe knowledge and practice of what is becoming known as "Death Control". You have nodoubt heard of the term "Birth Control". "Death Control" is something rather different. Itrecognises the work of the doctors and scientists who now keep alive people who， not verylong ago， would have died of a variety of then incurable diseases. Through a wide variety oftechnological 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 verycause of the greatest threat to mankind.
If we examine the amount of land available for this ever-increasing population， we be-gin to see the problem. If everyone on the planet had an equal share of land， we would eachhave about 50，000 square metres. This figure seems to be quite encouraging until we exam-ine the amount of usable land we actually have. More than three-fifths of the world"s landcannot produce food.
Obviously， with so little land to support us， we should be taking great care not to reduceit further. But we are not! Instead， we are consuming its "capital" —— its nonrenewable fos-sil fuels and other mineral deposits that took millions of years to form. but which are nowbeing destroyed in decades. We are also doing the same with other vital resources not usu-ally thought of as being nonrenewable such as fertile soils， groundwater and the millions ofother species that share the earth with us.
It is a very common belief that the problems of the population explosion are causedmainly by poor people living in poor countries who do not know enough to limit theirreproduction. This is not true. The actual number of people in an area is not as important asthe 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 asa whole.
According to the passage， what contributes to the population increase？ 查看材料
A.Human beings" ignorance.
B.The failure of"Birth Control".
C.The success of"Death Control".
D.Technological innovations.
第8题
【C1】
A．strengthening
B．inspiring
C．striving
D．resolving
第9题
回答题
Why Buy Shade-Grown Coffee？
When people argue about whether coffee is good for health， they"re usually thinking of the health of the coffee drinker. Is it food for your heart？ Does it increase blood pressure？ Does it help you concentrate？ However， coffee affects the health of the human population in other ways， too.Traditionally， coffee bushes were planted under the canopy（树冠）of taller indigenous（土生土长的）trees. However， more and more farmers in Latin America are deforesting the land to grow full-sun coffees. At first， this increases production because more coffee bushes can be planted if there aren"t any trees. With increased production come increased profits.
Unfortunately， deforesting for coffee production immediately decreases local wildlife habitat. Native birds nest and hide from predators（捕食者）in the tall trees and migrating birds rest there.
Furthermore， in the long term， the full-sun method also damages the ecosystem because more chemical fertilizers and pesticides are needed to grow the coffee. The fertilizers and pesticides kill insects that eat coffee plant， but then the birds eat the poisoned insects and also die. The chemicals kill or sicken other animals as well， and can even enter the water that people will eventually drink.
Fortunately， farmers in Central and South America are beginning to grow more coffee bushes in the shade. We can support these farmers by buying coffee with such labels as "shade grown" and "bird friendly." Sure， these varieties might cost a little more. But we"re paying for the health of the birds， the land， ourselves， and the planet. I think it"s worth it.
What is the main idea of this passage？ 查看材料
A.Farmers are changing the way they grow coffee.
B.Coffee is becoming more expensive to produce.
C.Shade-grow coffee is more expensive than sun-grow coffee
D.People should buy shade-grown coffee.
第10题
根据下面短文内容，回答题。
Why Buy Shade-Grown Coffee？
When people argue about whether coffee is good for health, they&39;re usually thinking of the health of the coffee drinker. Is it food for your heart？ Does it increase blood pressure？ Does it help you concentrate？ However, coffee affects the health of the human population in other ways, too.
Traditionally, coffee bushes were planted under the canopy (树冠) of taller indigenous (土生土长的 ) trees. However, more and more farmers in Latin America are deforesting the land to grow full-sun coffees. At first, this increases production because more coffee bushes can be planted if there aren&39;t any trees. With increased production come increased profits.
Unfortunately, deforesting for coffee production immediately decreases local-wildlife habitat.Native birds nest and hide from predators (捕食者 ) in the tall trees and migrating birds rest there.
Furthermore, in the long term, the full-sun method also damages the ecosystem because more chemical fertilizers and pesticides are needed to grow the coffee. The fertilizers and pesticides kill insects that eat coffee plant, but then the birds eat the poisoned insects and also die. The chemicals kill or sicken other animals as well, and can even enter the water that people will eventually drink.
Fortunately, farmers in Central and South America are beginning to grow more coffee bushes in the shade. We can support these farmers by buying coffee with such labels as "shade grown" and"bird friendly."Sure, these varieties might cost a little more. But we&39;re paying for the health of the birds, the land, ourselves, and the planet. I think it&39;s worth it.
What is the main idea of this passage？ 查看材料
A.Farmers are changing the way they grow coffee
B.Coffee is becoming more expensive to produce
C.Shade-grow coffee is more expensive than sun-grow coffee
D.People should buy shade-grown coffee
