题目内容
b. has been missed
c. are missing
d. was missing
The American scientist,Benjamin Franklin,was the first to suggest that lightning is in fact electricity formed between the earth and clouds high above.It happened in 1752.In the same year,he also built the first lightning rod(避雷针)to protect buildings from being struck by lightnings.
Modern science has discovered that lightning is very strong and powerful.A lightning between a cloud and the earth may be as long as 13 kilometers,and travels at a speed of 30 million meters per second.Scientists have the opinion that there are about 2000 million flashes of lightning per year.In the United States alone,it kills almost one person per day.
The safest place to be in during an electrical(电的)storm is a closed car.Outside,one should go close to low ground for cover and not stop under a tree.Also one should stay out of water and away from metal fences.Inside a house people should keep away from open doorways and windows and not touch wires or metal things.
【小题1】From this passage we know lightning is____.
| A.one of the great mysteries of nature. |
| B.electricity high above the earth. |
| C.a kind of light. |
| D.the sound from the clouds. |
| A.every person can see lightning every day. |
| B.at least one person is killed by lightning every day. |
| C.there are about 6 million flashes of lightning per year. |
| D.about one person per day dies from lightning. |
| A.stand under a tree. |
| B.go outside. |
| C.stay in a closed car. |
| D.stop near windows. |
| A.prevent accidents caused by lightning |
| B.stop lightning |
| C.protect buildings from being washed away. |
| D.delay the coming of lightning |
a speed of ______.
| A.30 kilometres per second. |
| B.3000 kilometres per second |
| C.3 kilometres per second |
| D.30,000 kilometres per second |
In old times,man considered lightning to be one of the great mysteries(神秘事物)of nature.In fact a single flash of lightning 1.6 kilometers long has enough electricity to light one million lamps.
The American scientist,Benjamin Franklin,was the first to suggest that lightning is in fact electricity formed between the earth and clouds high above.It happened in 1752.In the same year,he also built the first lightning rod(避雷针)to protect buildings from being struck by lightnings.
Modern science has discovered that lightning is very strong and powerful.A lightning between a cloud and the earth may be as long as 13 kilometers,and travels at a speed of 30 million meters per second.Scientists have the opinion that there are about 2000 million flashes of lightning per year.In the United States alone,it kills almost one person per day.
The safest place to be in during an electrical(电的)storm is a closed car.Outside,one should go close to low ground for cover and not stop under a tree.Also one should stay out of water and away from metal fences.Inside a house people should keep away from open doorways and windows and not touch wires or metal things.
【小题1】From this passage we know lightning is____.
| A.one of the great mysteries of nature. |
| B.electricity high above the earth. |
| C.a kind of light. |
| D.the sound from the clouds. |
| A.every person can see lightning every day. |
| B.at least one person is killed by lightning every day. |
| C.there are about 6 million flashes of lightning per year. |
| D.about one person per day dies from lightning. |
| A.stand under a tree. |
| B.go outside. |
| C.stay in a closed car. |
| D.stop near windows. |
| A.prevent accidents caused by lightning |
| B.stop lightning |
| C.protect buildings from being washed away. |
| D.delay the coming of lightning |
a speed of ______.
| A.30 kilometres per second. |
| B.3000 kilometres per second |
| C.3 kilometres per second |
| D.30,000 kilometres per second |
任务型阅读
阅读下面的短文,从文后方框中选择恰当的句子填入文中空白处。
When you read this sentence, the population of the earth has grown by 10 people.1_________
Most of these new people are born in developing countries.2_________
In the developed countries of Europe and North America, the population is growing very slowly. This is because women in these countries have, on average(平均), only one or two children. 3_________
In the developing countries, more than one billion people already live below the poverty line (贫困线).
4_________ Children get little or no time at school and suffer from many kinds of diseases.
The UN has said that the world’s population will reach 12.5 billion people by the year 2100. If the number makes your head spinning(眩晕), you’re not alone. Many experts are worrying that so fast population growth could have very bad results. 10_________
|
A. These countries are found in much of Africa, South America and parts of Asia. B. These people don’t have enough food to eat and they live in poor housing. C. That may not sound much, but it’s about 14,000 people per hour. D. But in the developing countries, many women have five or more children. E. It could hurt the environment and increase the number of poor people. |
| 阅读下面的短文,从文后方框中选择恰当的句子填入文中空白处 | |
Most of these new people are born in developing countries. (2)_____ In the developed countries of Europe and North America, the population is growing very slowly. This is because women in these countries have, on average(平均), only one or two children. (3)_____ In the developing countries, more than one billion people already live below the poverty line (贫困线). (4)_____ Children get little or no time at school and suffer from many kinds of diseases. The UN has said that the world's population will reach 12.5 billion people by the year 2100. If the number makes your head spinning(眩晕), you're not alone. Many experts are worrying that so fast population growth could have very bad results. (5)_____ |