更多"If we want to feed the world's popu"的相关试题:
[单项选择]If we want to feed the world's population in 2050, our food production needs ______.
A. to increase by 30 percent
B. an increase of 300 percent
C. to increase to 3 billion tons per year
D. an increase of three times
[单项选择]When did the world's population reach six billion
A. October 10, 1999.
B. October 11, 1999.
C. November 10, 1999.
D. November 11, 1999.
[单项选择]When will the world's population hit 10 billion
A. 2010.
B. 2002.
C. 2036.
D. 2054.
[单项选择]The world's population will be getting less.
[单项选择]It is expected that the world's population will reach ______ by the end of the century.
A) 2 billion people C) 80 percent of all people
B) 4.4 billion people D) 6.4 billion people
[单项选择]How long did it take for the world's population to increase from 2 billion to 3 billion
A. 304 years.
B. 123 years.
C. 33 years.
D. 14 years.
[单项选择]The world's population is becoming ______.
A. larger and larger
B. more and more
C. faster and faster
D. more terrible
[单项选择]If the world population is increasing continuously，food supplies will not be ______ to feed them.
A. sufficient
B. efficient
C. equal
D. effective
[单项选择]World population will continue rising from the current 5 billion until about 2050, but if the trends of the 1980s continue, it will ______ at about 9 billion.
A. level up
B. level off
C. level on
D. level down
[单项选择]What percentage of the world population is illiterate
A. More than 1/3.
B. More than 1/5.
C. More than 1/4.
D. A little Jess than 1/4.
[单项选择]The population of the world has grown very fast ______ four hundred years.（）
A. for pass
B. in the pass
C. in the past
D. for past
[单项选择]By the year of 2010, the world population probably ______ 6 billion.
A. have reached
B. will be reaching
C. will have reached
D. is reaching
