If cloned animals could be used as organ donors, ().
A、people don’t have to worry about cloning twins for transplants
B、raising animals such as pigs can help solve the problem
C、the human body attacks and destroys tissue from other species
D、it may be more efficient to produce such animals by cloning than by cur

未分类题In Leon Nacson’s view, air and water are our Number One priorities for the following reasons except ().A、he cannot understand why people are polluting air and waterB、there will definitely be no fresh air and clean water for future generationsC、we would run out of air and water if we didn’t stop polluting themD、air and water polluting are the current and futu

单项选择题The news makes me ________ change my mind.A. subjected toB. inclined toC. prone toD. bound to

单项选择题The doctors _______ the medicines to the people in the flood are annoyedB) attributedC) disposedD) distributed

单项选择题Young people’s social environment has a _______ effect on theiracademic progress.A) hotB) solidC) completeD) profound

未分类题Parallelism is used in ________.A、It sells us instant gratification. It diverts us only to divert, to make the time pass without pain.B、Consider the casual assumptions that television tends to cultivate: that complexity must be avoided, that visual stimulation is a substitute for thought, that verbal precisio is an anachronism.C、Television’s variety becomes a narcotic, not a stimulus.D、Everything about this nation – the structure of the society, its forms of family organization, its economy, its place in the world – has become more complex, not less.

单项选择题We must strengthen our _____ on the western border.A) offenseB) defectsC) defenseD) defendants

单项选择题The doctor can _________ you of the disease soon.A. healB. treatC. cureD. help

单项选择题The president claimed that once he _______ himself to this course of action therewas no going back.A) decidedB) committedC) acclaimedD) claimed

单项选择题We don't have sufficient resources to _______ our campaign for long.A) surviveB) observeC) sustainD) maintain

未分类题Recent studies have shown that air inside many homes, office buildings, and schools is full of pollutants such as ().A、chemicalsB、smokeC、bacteriaD、perfume

单项选择题They claim that （）1,000 factories closed down during theeconomic crisis.

A. increasingly
B. approximately
C. considerably
D.incredibly

单项选择题At first _______ I thought it was a dog but I was mistaken.A. impressionB. glanceC. assumptionD. instance

单项选择题To _______ the profit should not be the only purpose of a company.A. maintainB. stimulateC. maximizeD. stir

未分类题Which is not the reason for the startling of the visiting teacher in an Asian country?A、The students were too noisy and naughty.B、The art teacher was too strict.C、The teaching methods were very different from the ways of teaching in her own country.D、She feels uncomfortable in the new place.

单项选择题It is essential that everything in advance.A.should dwcideB.be decidedC.decidedD.will be decided