问题 解答题

(2008年山东省青岛市)2008年8月,北京奥运会帆船比赛将在青岛国际帆船中心举行.观看帆船比赛的船票分为两种:A种船票600元/张,B种船票120元/张.某旅行社要为一个旅行团代购部分船票,在购票费不超过5000元的情况下,购买A,B两种船票共15张,要求A种船票的数量不少于B种船票数量的一半.若设购买A种船票x张,请你解答下列问题:

(1)共有几种符合题意的购票方案?写出解答过程;

(2)根据计算判断:哪种购票方案更省钱?

答案

 

答案: (1)设购买A种船票x张,则购买B种船票(15-x)张,由题意,得

解得5≤x.∵x为整数,∴x=5,6.

x=5时,15-x=10

x=6时,15-x=9.

所以共有两种符合题意的购票方案.即方案一:购买A种船票5张,则购买B种船票10张;方案二:购买A种船票6张,则购买B种船票9张.

(2)当x=5时,600x+120(15-x)=600×5+120×9=4080(元);

x=6时,600x+120(15-x)=600×6+120×10=4800(元).

因为4080<4800,

所以购买A种船票5张,则购买B种船票10张更省钱.

 略

完形填空
A boy was walking home from school when he saw a large, tempting(诱人的)apple on one of the branches of an apple tree hanging out over a tall fence. The boy wasn’t much of a fruit-eater,  26 a bar of chocolate if given the choice,  27  , as they say, the forbidden fruit can be tempting. Seeing the apple, the boy wanted it. The more he looked at it, the 28 he felt and the more he wanted that apple.
He stood on tiptoe(脚尖),29 as high as he could, but even as his tallest 30 he was unable to touch it. He began to  31 up and down, as high as he could, at the  32 of each jump stretching his arms to get the apple. Still it remained out of  33 .
Not giving up, he thought, if only he had something to  34 on. His school bag wouldn’t give enough height and he didn’t want to  35 the things inside, like his lunch box, pencil case, and Gameboy. Looking   36 , he hoped he might find an old box, a rock , or,  37 luck, even a ladder, but it was a tidy neighborhood and there was nothing he could use.
He had tried everything he could think to do,   38  seeing any other choices, he gave up and started to walk   39 . At first he felt angry and disappointed thinking about how hungry he had become from his  40 , and how he really wanted that apple. The more he 41  like this, the more unhappy he became.
42 , the boy of our story was a pretty smart guy, even if he couldn’t always get what  he wanted. He started to say to himself, “ This isn’t  43 , I don’t have the apple and I’m feeling miserable as well. There’s  44 more I can do to get the apple—hat is unchangeable—but we are supposed to be able to  45 our feelings. If that’s the case, what can I do to feel better?
小题1:
A.preferringB.offering C.receivingD.allowing
小题2:
A.soB.thenC.butD.or
小题3:
A.sadderB.angrierC.hungrier D.tastier
小题4:
A.expandingB.stretchingC.swingingD.pulling
小题5:
A.strength B.lengthC.range D.height
小题6:
A.jump B.look C.walk D.glance
小题7:
A.tip B.stageC.topD.level
小题8:
A.hope B.hand C.sightD.reach
小题9:
A.put B.stand C.get D.hold
小题10:
A.breakB.shakeC.take D.strike
小题11:
A.upB.forward C.down D.around
小题12:
A.forB.with C.on D.of
小题13:
A.After B.ThroughC.Without D.Upon
小题14:
A.backB.awayC.upD.down
小题15:
A.wishesB.beliefsC.effortsD.goals
小题16:
A.thoughtB.imagined C.triedD.claimed
小题17:
A.ThereforeB.HoweverC.MoreoverD.Otherwise
小题18:
A.skillfulB.cheerfulC.harmful D.helpful
小题19:
A.somethingB.anythingC.everything D.nothing
小题20:
A.change B.express C.forget D.describe
多项选择题