The population of the earth()increasing fast.
第1题:
One day on the moon is _____.
A. two Earth week long
B. two Earth weeks long
C. two Earth weeks longer
D. two Earth weeks length
第2题:
Which of the following statements is NOT true?
A) World population is increasing at a rate of 150 per minute.
B) Lower death rates also contribute to world population growth.
C) The population of Columbia has been doubling every year for 21 years.
D) The United States is usually doubling its population about every 87 years.
第3题:
It can be learned from the passage that about four billion years ago ______.
A. the earth was in molten state
B. the earth surface temperature was above 100℃
C. the earth surface temperature was below 100℃
D. rain water could remain on the earth
43.答案为B。根据第一段最后一句及第二段内容可知,雨水在地表温度降到水的沸点以下才能停在地表,由此可知大约在四十亿年前,地表温度应在沸点以上。
第4题:
第5题:
The topic of the passage is that __.
A.the control of population is essential to the development of a nation
B.natural resources are important to the economic development of a country
C.awareness of the effects of man's actions is as important as population control
D. developed countries should do more to protect natural environment on the earth
第6题:
which of the following statements is not true about maori population?
A. Maori population makes up nearly one-seventh of New Zealand s total population.
B. Maori population is younger than the total population.
C. Non-Maori women tend to have children earlier than Maori women.
D. Maori women tend to have more children than non-Maori women.
第7题:
运行下面程序,若输入 a<回车> sd<回车> in inc1 x=1 in inc1 x=1 in inc2 x=1 in inc2 x=2 in inc2 x=3 fg<回车>则输出结果为______。 #define N 6 #include <stdio.h> main() { char c[N]; int i=0; for(;i<N;c[i]=getchar(),i++); for(i=0;i<N;i++)putch8r(c[i]); printf("\n"); }
A.a s d f g
B.a s d f
C.a sd f
D.asdfg
第8题:
完形填空Many of the world’s pollution problems have been caused by the crowding of large groups of people into cities.Satisfying the 21 of the people leads to further polluting by industry.If the rapid increase in human population 22 at the present rate (比率), there may be much greater harm.Some scientists speak of the 23 in number of people as “Population Pollution”.
About 2000 years ago, the world 24 was probably about 250 million.It reached a billion in 1850.By 1930 the population was two billion.It is 25 three and a half billion.It is expected to double by the year 2000.If the population continues to grow at the same 26 , there would be 25 billion people in the world a hundred years from now.
Man has been using the earth’s 27 more and more rapidly over the years.Some of them are almost gone.Now many people believe that man’s greatest 28 is how to control the growth of this population.The materials in the world will not support the human population in time to come if the present rate of increase continues.29 there is over crowding in the cities and hunger in some countries.Can man’s rate of increase continue?
Many people believe that human survival (幸存者) in the future 30 on the answer to the question.
21.A.needs
B.supplies
C.service
D.supports
22.A.stops
B.continues
C.slows down
D.adds to
23.A.increase
B.reduce
C.country
D.improvement
24.A.people
B.situation
C.population
D.land
25.A.now
B.in the past
C.in the future
D.then
26.A.place
B.time
C.rate
D.result
27.A coal
B.oil
C.mines
D.resources
28.A.problem
B.power
C.plan
D.idea
29.A.Already
B.Yet
C.Still
D.Often
30.A.feeds
B.lives
C.keeps
D.depends
第9题:
Believe it or not,the day when you can go to the moon is coming soon.You can go into space (11) space shuttle.It (12) about three days for the shuttle to go from the earth to the moon. The shuttle flies a long way to a space station. You can stay there for a short rest and then it will (13) you to the moon.
Now you can jump out of the shuttle. But you mustn't take (14) your spacesuit,because it is very hot in the daytime and very cold at night on the moon. The moon is much smaller than the earth. Things are (15) 0n the moon than they are on the earth. You can jump high every time you take a step. You will find that it is never tiring to walk on the moon. You don't need to take an umbrella or a raincoat with you,(16) there is no rain on the moon You can hear (17) because there is no air on the moon. And there are no animals or(18) living things there.
The moon moves more slowly than the earth,so one day on the moon is as long as two weeks on the earth and one night is just as long as two weeks on the earth. What could you do in (19 )long days and nights and in a silent world?' Now scientists are trying to make the (20) 0f the moon. But our earth is really a far better place to live,as long as we take good care of it,
( )11.
A.on
B.in
C.by
D.with
第10题: