更多"Scientists and economists (believe)"的相关试题:
[单项选择]Scientists and economists (believe) that human being (can never) (use away) all the (mineral) resources on Earth.
A. believe
B. can never
C. use away
D. mineral
[单项选择]Scientists believe that human evolution ______.
A. has seldom been accompanied by climatic changes
B. has exerted little influence on climatic changes
C. has largely been effected by climatic changes
D. has had a major impact on climatic changes
[单项选择]Many economists believe that advertising helps increase competition，which leads to lower prices，thus benefiting consumers and the economy as a whole
A. 许多经济学家认为，广告增加了竞争的成本，使商品质量不断下降，这就使消费者的经济利益受到损害。
B. 许多经济学家相信，广告加剧了竞争，又降低了商品的价格，所以消费者和整个经济都会从中得到好处。
C. 许多经济学家坚信，广告会加剧竞争，过度的竞争致使商品质量低劣，从而影响消费者整体的经济利益。
D. 许多经济学家认为，广告有助于竞争，而竞争的加剧会降低商品价格，从而使消费者和经济在整体上受益。
[单项选择]Some economists believe women earn less than men partly because ______.
A. there are more than enough women in the labor force
B. women have more freedom in selecting jobs
C. women are only provided with low-paid jobs
D. women are less experienced than men
[单项选择]Hemingway's enduring contribution to the human being is his insistence that grace ______ under pressure.
A. is to be kept
B. has been kept
C. should have been kept
D. be kept
[单项选择]According to a recent scientific report, human beings are likely to travel ______ the speed of light in near future.
A. to
B. for
C. at
D. by
[单项选择]In what sense does the writer think that human beings are programmed
[单项选择]Medical scientists believe that
A. tests have been designed to settle the cholesterol dispute
B. drugs have been tested to reduce the amount of the substance in blood
C. low cholesterol foods or anti-cholesterol drugs or both can reduce the chance of a heart attack
D. none of the statements mentioned above is correct
[单项选择]Political scientists believe that the important cause for decreasing voter turnout is ______.
A. the inconvenience of voting
B. the commercialization of the voting procedures
C. the lack of interest and enthusiasm in politics
D. the insecurity of voting on line due to the constant breakdown of computer systems
[单项选择]Scientists believe that there is not enough oxygen in the Moon's atmosphere to______ plant life.
A. adapt
B. personalize
C. sustain
D. describe
