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.
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tell still because hot last example in ton black before deep on |
完型填空。 |
Australia is 1 island in the world. It"s a 2 smaller than China. It is in the 3 of the earth. So when it is hot summer in 4 , it"s cold winter in Australia. Australia is big, but the population there is 5 . The population of Australia is the same 6 that of Shanghai, a city in China. Australia is famous for its 7 and kangaroo. After about drive from any town, you will find 8 in the middle of white sheep. Sheep, sheep, 9 are sheep. Have you ever seen a kangaroo? It has a "bag" in its body. The 10 50 kangaroo keeps its baby kangaroo in the"bag". It is very interesting, isn"t it? |