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The light bulb ______ by Edison in the middle of the 1780s.
A．is invented B．was invented C．invented D．invent
九年级英语单项填空中等难度题查看答案及解析
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D
Edison-style light bulb and CFLs
1.About 130 years ago, Thomas Edison of the USA invented the light bulb.
Edison’s bulb has turned night into day ever since. But today, many want to turn the light off.
2.The European Union recently decided that by 2009, people should stop using the Edison-style light bulb. Instead, they should use compact fluorescent lamps(CFLs节能灯).
3.“CFLs save energy and last longer. They can save money in the long run,” said a British official. CFLs use 67 percent less electricity than the older bulbs. They last up to times longer. Scientists say that if everyone used CFLs, electrify use would be cut 18 percent. There would also be much smaller amounts of greenhouse gases given off.
4.But it’s difficult to make people change their lighting habits. First the CFLs are more expensive. They cost eight times the price of the older bulbs. Many people don’t like the CFL bulbs. They find it too bright. You cannot change the light of a CFL, either.
5.CFLs have been around for several years. However, the older lights still make up about two-thirds of total light bulb sales.
A. When to stop to use CFLs
B. Edison made the world bright
C. The older style lights are still used widely
D. The advantages of using CFLs
E. The disadvantages of using CFLs.
阅读以上5段语言材料，请找出与它们相对应的标题，并将其标号填入下列方框内。
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10.
九年级英语其他题中等难度题查看答案及解析
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is believed that Edison invented the light bulb.
A. It B. That C. This D. He
九年级英语单选题中等难度题查看答案及解析
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—Who ________ the electric light bulb?
—Thomas Edison.
A. performed B. discovered
C. imagined D. invented
九年级英语单选题简单题查看答案及解析
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Franklin ________ electricity, and Edison ________ the light bulb.
A. discovered; discovered B. invented; invented
C. discovered; invented D. invented; discovered
九年级英语单选题困难题查看答案及解析
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Marie Curie ________ radium, but Edison ________ the light bulb.
A.created; discovered B.discovered; invented
C.invented; discovered D.invented; created
九年级英语单选题中等难度题查看答案及解析
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根据下列句子及所给汉语注释，在句子空缺处写出各单词的正确形式（每空只写一词）。
1.Thomas Edison _______(发明) the light bulbs.
2.He went into the room _______(慢地) and sat down.
3.You can’t solve the problems ______(除非) you do it carefully.
4.He has a kind ______(心) and often helps others.
5.Some animals, for example, elephants and koalas, live on grass and _______(树叶)
6.My uncle bought me an Ipad for my _____(第十二) birthday.
7.So far, we’ve ________(成功) in saving thousands of people in danger.
九年级英语单词拼写中等难度题查看答案及解析
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Light bulb which was invented by Edison _________now.
A. was widely used B. is widely used
C. will be widely used D. used widely
九年级英语单选题中等难度题查看答案及解析
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I think the most helpful invention is light bulb. It seeing in the dark, and it gives people more time to work and play every day.
A. used to B. is used to C. is used for
九年级英语单项填空中等难度题查看答案及解析
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The light______ by Edison is helpful for people.
A. invent B. invents
C. invented D. inventing
九年级英语单项填空中等难度题查看答案及解析