问题
填空题
已知关于x的不等式组
|
答案
解得不等式组的解集为:a≤x<2,
因为不等式组只有四个整数解,所以这四个整数解为:-2,-1,0,1,
因此实数a的取值范围是-3<a≤-2.
已知关于x的不等式组
|
解得不等式组的解集为:a≤x<2,
因为不等式组只有四个整数解,所以这四个整数解为:-2,-1,0,1,
因此实数a的取值范围是-3<a≤-2.
完型填空。 |
A man and his wife arrived in Boston by train.After getting off the train, they walked without an 1 into the outer office of Harvard’s president.So they were stopped by his secretary and kept 2 . For hours, the secretary took no notice of them, 3 that the couple would finally become disappointed and 4 .But they didn’t.The secretary finally decided to disturb the president, though 5. A few minutes later, the president walked towards the couple with a 6face.The lady told him, “We had a son that 7 Harvard for one year.He loved Harvard.He was8_ here.But about a year ago, he was accidentally killed.My husband and I would like to 9 a memorial(纪念物)to him, somewhere on campus.” The president wasn’t moved .Instead, he was 10 .“Madam,” he said, “we can’t put up a statue for every person who studied at Harvard and died.If we did, this place would look like a 11 ,” “Oh, no,” the lady 12 quickly.“We don’t want to put up a statue.We would like to give a 13 to Harvard.” The president rolled his eyes and 14 at the couple and then exclaimed, ” A building! Do you have any 15 how much a building costs? We have spent over $7,500,000 on the campus building at Harvard.” For a moment the lady was silent.The president was 16 , because he could get rid of them now.Then the lady turned to her husband and said quietly, “Is that all it costs to start a 17 ? Why don’t we just start our own?” Her husband nodded. 18 their offer was turned down.Mr.and Mrs. Stanford traveled to California where they founded Stanford University 19 after them, a memorial to a son that Harvard no longer 20 about. |
( )1. A.choice ( )2. A.waiting ( )3. A.hoping ( )4. A.go down ( )5. A.hopelessly ( )6. A.pleasant ( )7. A.attended ( )8. A.clever ( )9. A.set about ( )10.A.satisfied ( )11.A.park ( )12.A.explained ( )13.A.building ( )14.A.laughed ( )15.A.suggestion ( )16.A.bored ( )17.A.department ( )18.A.Once ( )19.A.named ( )20.A.talked | B.decision B.standing B.finding B.go out B.carefully B.funny B.visited B.brave B.set up B.excited B.cemetery B.expressed B.yard B.shouted B.idea B.astonished B.university B.While B.looked B.knew | C.acquaintance C.sitting C.realizing C.go away C.unexpectedly C.cold C.studied C.proud C.set down C.shocked C.garden C.refused C.playground C.glanced C.thought C.interested C.business C.Since C.taken C.heard | D.appointment D.talking D.imagining D.go around D.unwillingly D.sad D.served D.happy D.set off D.ashamed D.museum D.admitted D.square D.called D.opinion D.pleased D.club D.Though D.followed D.cared |