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问题 选择题

― My sister bought me a new MP4 player, but I don’t know         .

― Let me show you.[ ]

A. what to use                    

B. which one to use

C. how to use it                    

D. where to use it

答案

答案：C

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想知道英国男孩Danny 在写给他的笔友Lin Tao 的信中都说了些什么吗？一起来看看吧！不过，看完信可别忘记回答问题哟！
Dear Lin Tao.
　　Thank you for your letter. Do you want to know about my family? I live with my
mum, dad and grandma in a big house in London.
　　I have a brother. His name is Janson and he's fourteen. He lives in Sydney in
Australia.
　　Do you like games? I like soccer. I often play soccer with my friends.
　　I have two pets. They are a cat and a dog. I want a bird, but my mother doesn't
like it.
　　Please write to me.
　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　Danny
1.Danny lives in__________.
A.a small house
B.London
C.Australia
D.Sydney
2.How old is Danny's brother?
A.11
B.12
C.13
D.14
3.There are__________people in Danny's family.
A.three
B.four
C.five
D.six
4.Danny often plays soccer with his _____.
A.mum
B.dad
C.grandma
D.friends
5.What's the Chinese for "pet"?
A.朋友
B.宠物
C.玩具
D.同伴
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问答题

小张同学家安装了一台太阳能热水器，晴天可利用太阳能集热，阴雨天可用电辅助加热，铭牌如右表所示．求：（其中 m=ρV）

额定电压220V容积100L
额定功率1650W频率50HZ
（1）太阳能热水器贮满水，水温从20℃升高到50℃时，需要吸收多少热量？

（2）用电加热时，热水器正常工作的电流有多大？

（3）贮满水的热水器，阴天里要使水温从20℃升高到50℃，其中55%的热量是由电来辅助提供的，则热水器正常工作时需加热多长时间？（不计热量损失）

（4）我国出台了一系列有关“家电下乡”的政策，其中对购买高能效、低能耗的家电产品实行政府财政补贴，就国家这一政策对能源与社会发展带来的影响，发表你的看法．
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