问题:单选题下列各命题中,哪个是真命题( ).A 若A∩B=∅,则A=∅或B=∅B 两条对角线相等的四边形是正方形C 若A∪B=U(U为全集),则A=U或B=UD 如果一个角的两边分别垂直于另一个角的两边,那么这两个角相等或互补
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问题:单选题Gone with The Wind is a _____ movie.A remarkableB perfectC indispensableD outstanding
问题:单选题Rainfall is the main _____ of water supply in that area.A kindB sortC sourceD resource
问题:填空题已知函数y=x2-13x+42,那么当x∈{x∣____}时,y<0;当x∈{x∣____}时,y>0;当x∈{x∣____}时,y=0.
问题:单选题Previous _____ his departure, he addressed a letter to his daughter.A toB ofC inD from
问题:单选题It was soon after the economic crisis _____ sales of e-business started to grow.A whyB howC whereD that
问题:单选题A smelledB lookedC searchedD found
问题:单选题When you show your interest and pleasure in American people’s house, they may be _____.A angryB happyC sadD Worried
问题:单选题If only I _____ how to operate a computer as you do!A had knownB would knowC should knowD knew
问题:单选题A tooB as wellC as well asD also
问题:单选题By the time you finish your homework, all of us _____ ours at hand, I’m sure.A will finishB will have finishedC have finishedD have been finishing
问题:单选题—A lot of old people feel lonely. We should try our best to care for them.—_____. I mean, we’re all going to be old one day, too.A Take it easyB Not at allC You’re right
问题:单选题The famous scientist was easy _____ along with.A to getB for gettingC gettingD got
问题:单选题A schoolB supermarketC carD home
问题:单选题If you leave your preparation _____ the last minute, you’ll reduce your chances of passing the exam.A atB withC overD until
问题:单选题What match do you know will last ninety minutes?A Tennis.B Football.C Golf.D Spelling.
问题:单选题A heB sheC itD that
问题:单选题—Eric, you look so cool with your sunglasses.—_____.A Not reallyB It’s not trueC Nothing muchD Thank you
问题:单选题Without the sun’s light _____ the earth’s surface, it would be so cold that life could not exist on the earth.A warmsB warmedC warmingD to warm
问题:单选题I’ll never forget the holidays _____ I worked in the factory.A whichB whenC thatD where