The authors purpose in writing this text is to argue that______.
A．the circulation of atmosphere protects the biosphere and makes life on earth possible
B．if the protective atmosphere is too damaged by human activity, all life will cease
C．life is the result of complex interdependent events of nature
D．despite the complexity and power of the atmosphere humans can affect it greatly

未分类题In paragraph 4, the word 'dog' is most similar in use to '______'.A．be addressed byB．troubleC．be associated withD．characterize

未分类题The long-term useful outcomes of the crash include______.A．increased consumer confidence in the marketplaceB．improved measures to protect investors from fraudC．clearer knowledge of the future of the marketD．improvement in the management of global businesses

未分类题In paragraph 2, 'the event still colors the play of cautious investors' means that______.A．the event has been forgotten by all but the most cautious investorsB．the event has scared many people away from investingC．the event still hurts the market todayD．the event still influences the decisions of investors today

未分类题The authors attitude towards the long-term influence of the oil spillage is one of______.A．optimisticB．uncertaintyC．concernD．indignation

未分类题The authors attitude towards early screening for lung cancer is______.A．satisfactoryB．disappointedC．criticalD．objective

未分类题It is indicated in Paragraph 1 that______.A．seeing is not always believingB．healthy people also should always go to hospital for a cancer screeningC．through our own physiological system can we eradicate tumorsD．screening for lung cancer, to some extent, may do more harm than good

未分类题In Paragraph 5, the underlined word 'that study' refers to______.A．his own studyB．the study of cancer insulated from screeningC．the study involves screeningD．the study carried out by Claudia Henschke

未分类题It can be inferred from Paragraph 4 that______.A．marine animals cannot live within oxygen level 20% below normalB．the estimated amount of spilled oil is fully recognized by all partiesC．the dispersed oil will come inland in tiny specksD．one necessary condition for the digestion of bacteria is oxygen

未分类题The underlined word in Paragraph 6 refers to______.A．the damageB．the bacteriaC．the oilD．the chemical

未分类题The authors attitude towards the transportation of London during the 2012 Olympic Games is one of______.A．satisfactionB．indignationC．skepticismD．positiveness

未分类题The main point of paragraph 4 is______.A．those who need a college education most are having the most difficulty getting itB．student loans are improving access to education for allC．high-income families benefit most from student loansD．low to moderate-income families benefit most from student loans

未分类题We can infer from Paragraph 1 that______.A．Dr. Bollen has examined all the Internet data of 2008 to do his researchB．tweets of one person is totally boring, even to his her friendsC．one Tweeter user's feeling cannot represent America's collective moodD．Tweeter users' mood in the second half of 2008 accorded with the country's events

未分类题By mentioning Hal Varian, the author intends to state that______.A．his finding has aroused thinking and research on predictions based on Internet dataB．his finding has predicted the increase of unemployment rateC．his finding has forecast the price fluctuation of certain productsD．his finding has been highly valued by being published on newspaper

未分类题In paragraph 1, '... student lending has increased in breadth as well as depth' means______.A．there are a greater number of student loans than beforeB．student loans are for higher amounts of money than beforeC．more total money is owed by students than beforeD．there are more student loans than before and the total money owed is more than before

单项选择题与计算机内存容量密切相关的是（）

A.数据总线位数
B.CPU管脚数
C.硬盘容量
D.地址总线位数