From the passage it can be seen that ______.

A．raising the world’s temperature only a few degrees would not do much harm to life on the earth B．lowering the world’s temperature merely a few degrees would lead many major farming areas to disaster C．almost no temperature variations have occurred over the past decade D．the world's temperature will remain constant in the years to come

A．it's mere(只不过的)fuss(小题大做)to write so much about the ideas, feelings, and actions of youth B．the author blames the young for being trouble-maker at home C．the author blames the parents for not understanding what their children think and feel D．the trouble in American families is often caused by difference ideas and opinions between parents and children

A．not all hacking attempts are worthy of investigation B．information of the victims is inaccessible C．InfraGard chapters will be in effect by the end of September D．Amazon.com was often disrupted by hacking

A．all the ideas "new" to us are actually old B．some "new" ideas can make money without having to be commercialized C．all "new" ideas first appeared in the form. of a patent D．some "new" ideas may not bring economic reward to their originators

A．the human eye is sensitive to all wavelengths B．colors are related to wavelengths C．there are more color-blind women than color-blind men D．failure of rods cause color-blindness

A．is in favor of prohibiting passengers' use of electronic devices completely B．has overestimated the danger of electromagnetic interference C．hasn't formed his own opinion on this problem D．regards it as unreasonable to exercise a total ban during flight 此题为多项选择题。

A.is in favor of prohibiting passengers’use of electronic devices completely B.has overestimated the danger of electromagnetic interference C.hasn’t formed his own opinion on this problem D.regards it as unreasonable to exercise a total ban during flight

A．may never be exhausted． B．may be dropping rapidly． C．is surprisingly big． D．is as rich as ever．

A．killing foxes with poison is illegal B．limiting the fox population is unnecessary C．hunting foxes with dogs is considered cruel and violent by some people D．fox-hunting often leads to confrontation between the poor and the rich

A．Mr. Cattanzara was surprised at George's reading plan. B．Mr. Cattanzara was doubtful about George throughout. C．George was forced to tell a lie and then regretted. D．George lied at the beginning and then became serious.

A) compared with other hospitals nurse at Beth Israel Hospital are more patient B) in most hospitals patient care is inadequate from the professional point of view C) in most hospital nurse get low salaries D) compared with other hospital nurses have to work longer hours at Beth Israel Hospital

A．only collects paintings by American artists B．has sold many paintings to foreign collectors C．has a larger collection of paintings than other museums D．only exhibits a portion of its collection of paintings

A．should be driven out of the country that they inhabit in B．may do harm to people's lives C．will be praised for their deeds D．must be respected for their heroic deeds 此题为多项选择题。

A．human activities will do grave damage to rainforests B．Amazon rainforest soils used to be the richest in the world C．farming is responsible for the destruction of the Amazon rainforests D．there once existed an urban civilization in the Amazon rainforests

A．the students' behavior. in the classroom is very bad B．the teachers do not have a strong sense of responsibility C．the educational department should be to blame D．the teachers should be able to adjust their teaching methods to the development of society

A．not all hacking attempts are worthy of investigation B．information of the victims is inaccessible C．InfraGard chapters will be in effect by the end of September D．Amazon.com was often disrupted by hacking

A．to assist innocent prisoners through DNA testing. B．to aid the law enforcers in finding the criminals. C．to prevent the injustice conviction in future. D．to verify all of the misidentification.

A．men suffer more from sun's radiation than women do. B．men will be more exhausted than women after a long trip. C．the higher proportion of fat in women's body makes them easier to lose weight. D．an aged man can still exercise his body as he was young.

A．first of all a scientist B．a naturalist but not a scientist C．no more than a born naturalist D．a scientist as well as a naturalist

A．will probably make a profit in 2001 B．is making a profit now C．is a company that sells books only D．suffers a great loss on the stock market 此题为多项选择题。

A．is critical at the start-up stage of electric vehicles. B．has no influence on consumers" buying interest. C．can greatly reduce the city"s pollutant emission. D．should support the mass adoption of electric vehicles.

A) no more than a born naturalist B) a naturalist but not a scientist C) a scientist as well as a naturalist D) first of all a scientist

A．the veto of the bill reestablishing the death penalty is of little importance B．the value of the death penalty as a deterrent to crime is not to be debated C．the death penalty is the most controversial issue in the United States today D．the second type of murderers in Paragraph 4 should be sentenced to death