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PassageTwoInearliesttimes,menconsideredlightningtobeoneofthegreatmysteriesofnature.So...
Passage Two
In earliest times, men considered lightning to be one of the great mysteries of nature. Some ancient peoples believed that lightning and thunder were the weapons of the gods.
In reality, lightning is a flow of electricity formed high above the earth. A single flash of lightning 1.6 kilometres long has enough electricity to light one million light bulbs .
The American scientist and statesman, Benjamin Franklin, was the first to show the connection between electricity and lightning in 1752. In the same year he also built the first lightning rod. This device protects buildings from being damaged by lightning.
Modern science has discovered that one stroke of lightning has a voltage of more than 15 million volts. A flash of lightning between a cloud and the earth may be as long as 13 kilometers, and travel at a speed of 30 million meters per second.
Scientists judge that there are about 2,000 million flashes of lightning per year. Lightning hits the Empire State Building in New York City 30 to 48 times a year. In the United States alone it kills an average of one person every day.
The safest place to be in case of an electrical storm is in a closed car. Outside, one should go to low ground and not get under tress. Also, one should stay out of water and away from metal fences. Inside a house, people should avoid open doorways and windows and not touch wires or metal things.
With lightning, it is better to be safe than sorry.
1. People once thought lightning came from ________________.
A. the sky B. the gods C. the earth D. nature
2. According to the passage what do you think all buildings need?
A. Metal fences. B. Electricity. C. lightning rods. D. Machines.
3. Lightning can travel ________________________________.
A. as quickly as water B. not so quickly as electricity
C. at very low speed D. at very high speed
4. Which of the following is NOT true?
A. In the U.S about one person per day dies from lightning.
B. The Empire State Building frequently gets hit by lightning.
C. Swimming during a thunder storm is a good idea.
D. A closed car is the best place to be during an electrical storm.
5. Lightning is probably ____________ to man.
A. useful B. kind C. useless D. Friendly 展开
In earliest times, men considered lightning to be one of the great mysteries of nature. Some ancient peoples believed that lightning and thunder were the weapons of the gods.
In reality, lightning is a flow of electricity formed high above the earth. A single flash of lightning 1.6 kilometres long has enough electricity to light one million light bulbs .
The American scientist and statesman, Benjamin Franklin, was the first to show the connection between electricity and lightning in 1752. In the same year he also built the first lightning rod. This device protects buildings from being damaged by lightning.
Modern science has discovered that one stroke of lightning has a voltage of more than 15 million volts. A flash of lightning between a cloud and the earth may be as long as 13 kilometers, and travel at a speed of 30 million meters per second.
Scientists judge that there are about 2,000 million flashes of lightning per year. Lightning hits the Empire State Building in New York City 30 to 48 times a year. In the United States alone it kills an average of one person every day.
The safest place to be in case of an electrical storm is in a closed car. Outside, one should go to low ground and not get under tress. Also, one should stay out of water and away from metal fences. Inside a house, people should avoid open doorways and windows and not touch wires or metal things.
With lightning, it is better to be safe than sorry.
1. People once thought lightning came from ________________.
A. the sky B. the gods C. the earth D. nature
2. According to the passage what do you think all buildings need?
A. Metal fences. B. Electricity. C. lightning rods. D. Machines.
3. Lightning can travel ________________________________.
A. as quickly as water B. not so quickly as electricity
C. at very low speed D. at very high speed
4. Which of the following is NOT true?
A. In the U.S about one person per day dies from lightning.
B. The Empire State Building frequently gets hit by lightning.
C. Swimming during a thunder storm is a good idea.
D. A closed car is the best place to be during an electrical storm.
5. Lightning is probably ____________ to man.
A. useful B. kind C. useless D. Friendly 展开
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BCDCA
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