题目内容

【题目】

1Four friends go swimming,shopping and cycling. Each person does one thing. What does each person do?

Eric:I don’t go cycling.

James:I don’t go swimming.

Sue:The boys don’t go shopping.

Kim:Sue goes swimming.

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2If one worker can complete(完成)a job in 6 days and a second worker spends 12 days completing the same job, how long will it take them to work together?

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3Sally has a bag of sweets. If she gives half the sweets to one friend,and if she then gives half the sweets in the bag to her other friend,she’ll have six sweets for herself in the bag. How many sweets has she got?

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4There is a connection (联系) between the house numbers and the names of the people who live there. Write the number of the last house, please.

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5Four children, Pat, Sean, Alan and Sam, all have a birthday party today. In one year’s time Sam will be the age Pat is now. Alan is half of Sean’s age and is three years younger than Sam. Sam is 11 years old. What age will Alan be when Sam is 15 years old?

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【答案】

1Eric goes swimming. James goes cycling. Sue goes swimming. Kim goes shopping

24 days.

324

419

512 years old.

【解析】

1根据文意可知,四个朋友去游泳、购物和骑自行车,他们每个人都做了一件事。Eric说我没有骑自行车;James说他没有去游泳;Sue说男孩们都没有去购物;KimSue去游泳了。根据他们四个说的话,我们先可以确定Sue去游泳了;然后根据Sue的话男孩们没有去购物,以及Eric说他没去骑自行车可知Eric去游泳了,以及James的话可知James去骑自行车了,又因为每个人都做了一件事,所以Kim只能是去购物了。

2根据题意可知,一个工人6天能完成一份工作,另一个工人12天完成一个工作,他们共同合作的话,几天完成。设整个工作量为1,那么第一个工人每天完成整个工作量的1/6,第二个工人每天完成工作量的1/12,设两个工人合作x天完成,根据题意得x/6+x/12=1,解得x等于4.故答案是4 days。

3根据题意可知,Sally最后剩下了六颗糖,那么她第二次给别人的糖也是六颗,所以第一次给别人糖之后,包里剩下12颗糖,所以Sally第一次给了别人12颗糖,那么她一共有24颗糖。

4题干告诉我们房间的号码和这个人的名字是有联系的,因此我们要找到房间号和这个人名字的联系,就能知道答案。通过前三个人的房间号和名字我们可以发现,房间号就是名字首字母在字母表中的顺序,如T是第20个字母;L是第12个字母;P是第16个字母。由此可知,Sophia第一个字母S是第19个字母,所以房间号是19.

5根据题意Alan is half of Sean’s age and is three years younger than Sam可知,AlanSam小三岁,所以当Sam15岁的时候,Alan应该是12岁了。

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