A very important world problem-in fact, I am inclined(傾向) to say it is the most important of all the great world problems which face us at the present time-is the rapidly increasing pressure of population on land and on land resources.

It is not so much the actual population of the world but its rate of increase which is important. It works out to be about 1.6 percent per annual net increase. In terms of numbers this means something like forty to fifty-five million additional people every year. Canada has a population of twenty million-rather less than six month's climb in world population. There are ten million people in Australia. So, it takes the world less than three months to add to itself a population. Let us take our own crowded country-England and Wales: forty-five to fifty million people-just about a year's supply.

By this time tomorrow, and every day, there will be added to the earth about 120,000 extra people-just about the population of the city of York.

Here I am not talking about birth rate. This is net increase. To give you some idea of birth rate, look at the seconds hand of your watch. Every second three babies are born somewhere in the world. Another baby! You cannot speak quickly enough to keep pace with the birth rate.

This enormous increase of population will create immense problems. By 2020 unless something desperate happens, there will be as many as seven billion people on the surface of the earth! So this is a problem which you are going to see in your lifetime.

1. According to the author, ________ is the most important in the world at the present time.

A. the quality of the increasing population

B. the actual population of the world

C. the rapidly increasing pressure of population

D. farming land is reducing at great speed

2. From the passage we know that the author is a(n) ________.

A. Canadian      B. Australian

C. American      D. Englishman

3. It takes ________ for the world to have a population of Australia.

A. about three months

B. about six months

C. one year

D. more than four months

4. According to the passage ________ babies are born on the earth per hour.

A. 180         B. 3 million

C. 120,000      D. 10,800

5. The author mentions the different populations of several countries in order to ________.

A. show how small those countries are

B. show how thickly those countries are populated

C. emphasize the low increase of the world population

D. emphasize the high rate of increase of world population

1. 解析:選C。細節(jié)理解題。從文章第一段可知,人口對土地及其資源的不斷快速增長的壓力為最重要的世界問題。

2. 解析:選D。推理判斷題。由文章第二段最后一句“Let us take our own crowded country-England and Wales”意為“讓我們說一下我們自己擁擠的國家——英格蘭和威爾士”可知。

3. 解析:選A。細節(jié)理解題。由文章第二段倒數(shù)第二句“因此,地球上的人類花不到三個月的時間就可以增加一個澳大利亞的人口!笨芍渲,“l(fā)ess than three months”與“about three months”意思相近。

4. 解析:選D。推理判斷題。由文章第四段第四句“Every second three babies are born somewhere in the world”可推知,每小時有10,800個嬰兒出生。

5. 解析:選D。推理判斷題。作者以不同國家的人口為例來強調(diào)世界人口的高增長率。

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