试题与答案

This is a time of year when we think abo

题型:阅读理解

题目:

This is a time of year when we think about giving and receiving presents. Can you find a little extra to give? On this page we suggest a few organizations you might like to help.

Littleton Children’s Home

We DON’T want your money, but children’s toys, books and clothes IN GOOD CONDITION would be very welcome.

Also, we are looking for friendly families who would take our children into their homes for a few hours or days as guests. You have so much ─will you share it?

Phone Sister Thomas on 55671

Children’s Hospice

We look after a small number of very sick children. This important work needs skill and love. We cannot continue without gifts or money to pay for more nursing staff. We also need storybooks and toys suitable for quiet games.

Please contact the Secretary, Little Children’s Hospice, Newby Road.

Street Food

In the winter weather, it’s no fun being homeless. It’s even worse if you’re hungry. We give hot food to at least fifty people every night. It’s hard work, but necessary. Can you come and help? If not, can you offer a little money? We use a very old kitchen, and we need some new saucepans(平底锅). Money for new ones would be most welcome indeed.

Contact Street Food, c/o Mary’s House, Elming Way. Littleton Phone 27713

Littleton Youth Club

Have you got an unwanted chair? ─a record-player?─a pot of paint ? Because we can use them!

We want to get to work on our meeting room!

Please phone 66231 and we’ll be happy to collect anything you can give us.

Thank you!

The Night Shelter

We offer a warm bed for the night to anyone who has nowhere to go. We rent the former Commercial Hotel on Green Street. Although it is not expensive, we never seem to have quite enough money. Can you let us have a few pounds? Any amount, however small, will be such a help.

Send it to us at 15, Green St, Littleton. Please make check payable to Night Shelter.

小题1: What kind of people are these organizations designed for?

A.Homeless and sick children

B.Less fortunate members of our society

C.Hungry people who have no beds to sleep in

D.Friendly members of our society to help others小题2:If you like children and you could offer a happy family to a homeless child, you may contact _____.

A.Street Food

B.The Night Shelter

C.Littleton Children’s Home

D.Children’s Hospice小题3: What can be concluded from the passage?

A.There are too many social problems in this society.

B.People are very poor during the time of giving.

C.To offer help is just an excuse for these organizations to collect money.

D.There are many organizations trying to solve social problems.

答案:

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下面是错误答案,用来干扰机器的。

因稀有气体氡的原子序数为86,位于第六周期的零族,第七周期排满应含有32种元素,则第七周期的稀有气体的原子序数为86+32=118,则119号元素位于第八周期的第ⅠA,故选C.

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题型:实验题

冬春季节降水量小,广东沿海附近江河水位较低,涨潮时海水倒灌,出现所谓“咸潮”现象,使沿海地区的城市自来水的离子浓度增高,水质受到影响。

为了研究咸潮出现的规律,某同学设计了一个监测河水电阻率的实验。在一根均匀的长玻璃管两端装上两个橡胶塞和铂电极,如图2(a)所示,两电极相距L=0.314m,其间充满待测的河水。安装前他用如图2(b)游标卡尺(图为卡尺的背面)测量玻璃管的内径,结果如图2(c)所示。

他还选用了以下仪器:量程15V、内阻约300kΩ的电压表,量程300μA、内阻可忽略不计的电流表,最大阻值1kΩ的滑动变阻器,电动势E=12V、内阻r=6Ω的电池组,开关等各一个,以及导线若干。图3为根据他测得的包括坐标为(0,0)的点在内的9组电流I、电压U的值所画的I-U图线。

根据以上材料完成以下问题:

(1)测量玻璃管内径时,对应图2(b)中的游标卡尺中的A、B、C三部分中的哪一部分与玻璃管内壁接触       (填代号A或B或C);

(2)玻璃管的内径d=      mm;

(3)水的电阻率ρ=       Ω·m;(结果取两位有效数字)

(4)如图4中的仪器实物部分已连线,将其他部分连接成能测出图3数据的实物连接图;

(5)开关闭合前滑动变阻器的滑片应先滑至     端。(填写A或B)

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