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By using less energy, you can reduce pollution that causes global (全球的) warming, An energy-saving light bulb (灯泡) uses less energy to produce the same amount of light as a regular bulb, Use the chart to compare a regular bulb with an energy-saving bulb.
Regular Light Bulb | Energy-Saving Light Bulb | |
Name | Incandescent light bulb | Compact fluorescent light bulb(CFL),energy saver |
Price | 50 cents | $5 |
Cost of energy | Used in one year (4 hours a day):$9.3 | Used in one year(4 hours a day):$2.5 |
Energy used | 75 watts(Most of this energy is wasted as heat.) | 20 watts |
Lifetime | 1.000 hours | 10,000 hours |
( ) 1.How much more energy does the regular bulb use than the CFL bulb if they are used for a year (four hours every day)?
A.75 watts. B.55 watts. C.20 watts. D.50 watts.
( ) 2.How many regular bulbs does a CFL bulb equal (等同于) in lifetime?
A.1 B.5. C.10. D.20.
( ) 3.I bought a regular bulb and Tom bought a CFL bulb.If we both used the bulb for four hours a day, how much money would Tom save in all after a year?
A.$ 2.3. B.$ 90.5. C.$ 6.8. D.$ 95.5.
( ) 4.Why do regular light bulbs use so much energy?
A.They make more light than CFL bulbs.
B.They can be used for a longer time than CFL bulbs.
C.They waste most of their energy as heat.
D.It's because of their shapes.
( ) 5.What does the writer try to tell us according to the passage?
A.Using more energy can produce less pollution.
B.Energy-saving light bulbs are cheaper than regular ones in shops.
C.It is a good idea to use energy-saving CFL bulbs instead of regular ones.
D.An energy-saving light bulb is easier to get broken.
查看习题详情和答案>>单词拼写(10分)
【小题1】Beijing is an a_______ (古老的)city, but Dalian is young.
【小题2】It is a _______(社会的)problem.
【小题3】Sun Haiping is Liu Xiang’s _______(教练).
【小题4】I bought a _______(数码)camera last week.
【小题5】My mother often look _______(浏览)magazines before going to bed.
【小题6】We must_______(遵守)the rulers of school.
【小题7】Reading in sun does_______(有害的)to our eyes.
【小题8】There are many kinds of_______(鲨鱼).
【小题9】Australia is famous for_______(绵羊).
【小题10】Tom is enjoying the _______(阳光)on the beach.
1阅读上面的短文,然后判断正(T)误(F)。
Jane,
After I left Paris I spent two days in New York City and one day in Washington DC. I got to Miami, Florida on Nov. 13. The weather is wonderful here. This morning I went swimming and then slept on the beach. When I woke up, I found Jennifer Lopez—my favorite movie star! She was just on my right! I asked her to take a picture with me. You know, that was my dream. She agreed! I'm going to show you the picture.
Yours,
John
Dear Dad,
I got here after 18 hours on a train at last! It's very cold here in Moscow. It's white everywhere. This afternoon I went to have a look at the city. I got lost. I was glad I took Russian lessons in my university. They helped me a lot. A young girl showed me the way back to my hotel. I think I can finish my work here and go back home soon. I'm longing for the warm sunshine at home. See you soon.
Max
Dear Amy,
I arrived in Guilin yesterday. What a beautiful place! The people are kind here and I have some new friends. Guess who I met here! Tom, my high school classmate. How small the world is! He is working here as an English teacher at a middle school. He showed me around the city. I also went to his school. I bought a special bag made in Guilin for you and a silk tablecloth for Mom. Tomorrow evening I'm going to fly to Beijing.
Love,
Mafia
1.Each of the three had a good time.
2.Maria went to see her classmate in Guilin.
3.It was warmer in Max's hometown than in Moscow.
4.Max came from Russia.
5.John was very glad that his dream of going to the beach came true.
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按每小题后的要求转换下面的句子,每空一词。(每空0.5分,满分5分)
1.Jorden takes exercise three or four times a week. (对划线部分提问)
does Jorden take exercise?
2. I bought a newspaper on my way home yesterday. (对划线部分提问)
did you on your way home yesterday?
3. He has never been to Shanghai before. (完成反义疑问句)
He has never been to Shanghai before, ?
4.The camera cost him 680¥ last month.(改为同义句)
He 680¥ the camera last month.
5. I’m sure I will have a good time in the coming school trip. (改为同义句)
I’m sure I will in the coming school trip.
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根据下列句子及所给单词的首字母,在答卷上按题号写出各单词的完全形式(每空限填一词)。
1.Yesterday I a______ with my best friend, so now I want to say sorry to her.
2.He r______ his bike to school yesterday.
3.My mother waters f______ every morning in the garden.
4.We started classes an hour a______.
5.Lu Xun is one of the greatest w______ in China.
6.Would you mind t______ down the music? I want to sleep.
7.Please wait in l______, or others will be annoyed.
8.Horse is a u______ animal for people in the old time.
9.Goldfish are easy to take c______ of.
10.I bought a new bike and it c______ me five hundred yuan.
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