更多"An estimated 20 percent of the U.S."的相关试题:
[单项选择]Over a third of the population was estimated to have no ______ to the health service.
A. assessment
B. assignment
C. exception
D. access
[单项选择]About what percent of the gifted has not graduated from colleges
A. 30%
B. 70%
C. 80%
D. 21%
[单项选择]The city has a dense manufacturing population.
A. 这个城市工业人口稠密。
B. 这个城市制造业密集人口众多。
C. 这个城市有为数众多的密集制造业。
D. 这个城市有一个稠密的工业人口。
[单项选择]It has been estimated that the earth's surface temperature has increased
______ one quarter to three quarters of a degree since 1850. ~
A. to
B. by
C. at
D. with
[单项选择]China has a large population than any of （ ） countries in the world.
A. the other
B. some
C. some other
D. other
[单项选择]The population bomb is a （） that has already happened in some parts of the world, with terrible results.
A. distress
B. miracle
C. disaster
D. giant
[单项选择]The author considers the notion that population alone is the best indicator of sustainable development to be
A. unoriginal
B. inaccurate
C. offensive
D. obscure
E. (E) speculative
[单项选择]Even if we succeed in controlling population growth, we will still have huge environmental problems to deal with.
A. 甚至我们成功地控制了人口成长，我们仍然有严重的环境问题要对付。
B. 即使我们成功地控制了人口增长，我们仍然有巨大的环境问题要对付。
C. 如果我们在控制人口成长上成功了，我们仍然有巨大的环境问题要应付。
D. 即使控制了人口增长，我们仍然有严重的环境问题要应对。
[单项选择]Why will the population in poorer countries increase（）
A. Because they need more labor to support the family.
B. Because the people have the habit to have a big family.
C. Because the people there are poorer.
D. Because the people there want to be rich.
[单项选择]Today, the Australian population is still mainly of British ______.
A. descent
B. descend
C. decadence
D. descendant
[单项选择]According to the passage, a large population will provide a chance for developing ______.
A. agriculture
B. national economy
C. industry
D. transport system
[单项选择]The American population is composed of people of different ______ backgrounds.
A. aesthetic
B. ethnic
C. athletic
D. ethic
[单项选择]Current estimates put thirteen percent of global flora at risk of extinction, but this number does not include______plants from tropical regions, where the majority of the world's plants grow.
A. apocryphal
B. deciduous
C. rare
D. innumerable
E. (E) vanished
[单项选择]The population in last area was growing rapidly. Needless to say, the housing problem there cried out for immediate solution.
A. tried hard to find
B. called loudly
C. needed very much
D. asked earnestly for
[单项选择]"Look after the people and the population will look after itself" (the last paragraph) may probably mean （）.
A. Watch the people carefully and the population growth rate will drop
B. Control the people firmly and the population growth rate will go up
C. Take care of the people and the population growth rate will rise
D. Take care of the people and the population growth rate will go down
[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
[单项选择]One aspect of the recent population trend is the ______.
A. development of complexes of cities
B. increasingly grcat distance between cities
C. transformation of cities into suburbs
D. growth of many small towns
