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Although man has known asbestos for many hundreds of years, it was not until 160 years ago that it was mined for the first time on the North American continent. H. W. Johns, owner of a New York City Supply Shop for roofers, was responsible for(对…负责) the opening of that first mine.
Mr. Johns was given a piece of asbestos which had been found in Italy. He experimented with the material and then showed its surprising powers to his customers. After putting on a pair of asbestos gloves, which looked much like ordinary work gloves, he took red-hot coals from the fireplace and played with them in his hands. How astonished the customers were to discover that he was not burned at all. You can well imagine that he had increasing business in asbestos roofing materials. However, because it was very expensive to transport (carry) them from Italy to the United States, Mr. Johns sent out a young scientist to seek a source nearer home. This young man found great vein(岩脉), in the province of Quebec in Canada.
Ever since 1881 Quebec has led the world in the production of this unusual mineral, which is made up of magnesium, silicon, iron, and oxygen. When it is mined, the asbestos is heavy, just as you would expect a mineral to be. When it is separated, a strange thing happens; the rock breaks down into fine, soft, soapy fibres(纤维).
Scientists do not know why the rock can be separated easily into threads(线), but they have found thousands of uses of this fireproof material, of the so-called “cloth of stone”.
Which title best expresses the main idea of this passage?
A. Asbestos mined in Canada B. Fireproof matter
C. A “wonder” mineral D. A new roofing material
Johns proved his ability as a salesman by_______.
A. going into roofing business B. carrying asbestos from Italy
C. sending a trained scientist D. showing the use of asbestos gloves
Which is the most important character of asbestos that the author wants to show us?
A. It is like thread. B. It feels soapy.
C. It burns easily. D. It is unusually heavy.
The author’s main purpose in writing this passage was to _______.
A. show the need for more scientists
B. compare asbestos with other minerals
C. increase the sales of asbestos
D. present facts about asbestos
查看习题详情和答案>>Although man has known asbestos for many hundreds of years, it was not until 160 years ago that it was mined for the first time on the North American continent. H. W. Johns, owner of a New York City Supply Shop for roofers, was responsible for(对…负责) the opening of that first mine.
Mr. Johns was given a piece of asbestos which had been found in Italy. He experimented with the material and then showed its surprising powers to his customers. After putting on a pair of asbestos gloves, which looked much like ordinary work gloves, he took red-hot coals from the fireplace and played with them in his hands. How astonished the customers were to discover that he was not burned at all. You can well imagine that he had increasing business in asbestos roofing materials. However, because it was very expensive to transport (carry) them from Italy to the United States, Mr. Johns sent out a young scientist to seek a source nearer home. This young man found great vein(岩脉), in the province of Quebec in Canada.
Ever since 1881 Quebec has led the world in the production of this unusual mineral, which is made up of magnesium, silicon, iron, and oxygen. When it is mined, the asbestos is heavy, just as you would expect a mineral to be. When it is separated, a strange thing happens; the rock breaks down into fine, soft, soapy fibres(纤维).
Scientists do not know why the rock can be separated easily into threads(线), but they have found thousands of uses of this fireproof material, of the so-called “cloth of stone”.
1. Which title best expresses the main idea of this passage?
A. Asbestos mined in Canada B. Fireproof matter
C. A “wonder” mineral D. A new roofing material
2. Johns proved his ability as a salesman by_______.
A. going into roofing business B. carrying asbestos from Italy
C. sending a trained scientist D. showing the use of asbestos gloves
3. Which is the most important character of asbestos that the author wants to show us?
A. It is like thread. B. It feels soapy.
C. It burns easily. D. It is unusually heavy.
4. The author’s main purpose in writing this passage was to _______.
A. show the need for more scientists
B. compare asbestos with other minerals
C. increase the sales of asbestos
D. present facts about asbestos
查看习题详情和答案>>When I was growing up, I had an old neighbor named Dr. Gibbs. He didn’t look like any doctor I’d ever known. He never yelled at us for playing in his yard. I remember him as someone who was a lot nicer than most of the adults in our community.
When Dr. Gibbs wasn’t saving lives, he was planting trees. His house sat on ten acres, and his life’s goal was to make it a forest.
The good doctor had some interesting theories concerning plant care and growth. He never watered his new trees, which flew in the face of conventional wisdom. Once I asked why. He said that watering plants spoiled them so that each successive tree generation would grow weaker and weaker. So you have to make things rough for them and weed out(淘汰) the weaker trees early on. He talked about how watering trees made for shallow roots, and how trees that weren’t watered had to grow deep roots in search of moisture. I took him to mean that deep roots were to be treasured.
So he never watered his trees. He planted an oak and, instead of watering it every morning, he beat it with a rolled-up newspaper. Smack! Slap! Pow! I asked him why he did that, and he said it was to get the tree’s attention.
Dr. Gibbs passed away a couple of years after I left home. Every now and again, I walked by his house and looked at the trees that I’d watched him plant some twenty-five years ago. They’re extremely tall, big and robust since they have deep roots now. However, the trees in my garden trembled in a cold wind although I had watered them for several years.
It seems that adversity(逆境) and suffering benefit these trees in ways comfort and ease never could. I stood there deep in thought.
Every night before I go to bed, I check on my two sons. I stand over them and watch their little bodies, the rising and falling of life within. I often pray for them. Mostly I pray that their lives will be easy. But I think that it’s time to change my prayer(祷词) because now I know my children are going to encounter hardship.
According to Dr. Gibbs’ theories, trees will become weaker if they _________.
A. are lack of care B. are watered C. are weeded out D. are beaten
According to Para.3 and Para.4, we can infer that Dr. Gibbs’ motto(座右铭) may be .
A. “Seeing is believing” B. “Put everything in proper use”
C. “Practice makes perfect” D. “No pain, no gain”
The underlined word robust in Para.5 most probably means _________.
A. strong B. strange C. deep D. old
Which of the following may be the author’s best prayer for his two sons now?
A. I wish them strong wings, with which they can fly higher and touch the sky.
B. I wish them nice fortune so that they can meet people like Dr. Gibbs in the future.
C. I wish them deep roots into the earth since the rains fall and the winds blow often.
D. I wish them great shades under the tree since the sunlight is always sharp and bitter.
Which of the following can be the best title of this passage?
A Nice Doctor B. The Deep Roots C. Adversity and Suffering D. My Childhood Memory
查看习题详情和答案>>When I was growing up, I had an old neighbor named Dr. Gibbs. He didn’t look like any doctor I’d ever known. He never yelled at us for playing in his yard. I remember him as someone who was a lot nicer than most of the adults in our community.
When Dr. Gibbs wasn’t saving lives, he was planting trees. His house sat on ten acres, and his life’s goal was to make it a forest.
The good doctor had some interesting theories concerning plant care and growth. He never watered his new trees, which flew in the face of conventional wisdom. Once I asked why. He said that watering plants spoiled them so that each successive tree generation would grow weaker and weaker. So you have to make things rough for them and weed out(淘汰) the weaker trees early on. He talked about how watering trees made for shallow roots, and how trees that weren’t watered had to grow deep roots in search of moisture. I took him to mean that deep roots were to be treasured.
So he never watered his trees. He planted an oak and, instead of watering it every morning, he beat it with a rolled-up newspaper. Smack! Slap! Pow! I asked him why he did that, and he said it was to get the tree’s attention.
Dr. Gibbs passed away a couple of years after I left home. Every now and again, I walked by his house and looked at the trees that I’d watched him plant some twenty-five years ago. They’re extremely tall, big and robust since they have deep roots now. However, the trees in my garden trembled in a cold wind although I had watered them for several years.
It seems that adversity(逆境) and suffering benefit these trees in ways comfort and ease never could. I stood there deep in thought.
Every night before I go to bed, I check on my two sons. I stand over them and watch their little bodies, the rising and falling of life within. I often pray for them. Mostly I pray that their lives will be easy. But I think that it’s time to change my prayer(祷词) because now I know my children are going to encounter hardship.
According to Dr. Gibbs’ theories, trees will become weaker if they _________.
A. are lack of care B. are watered C. are weeded out D. are beaten
According to Para.3 and Para.4, we can infer that Dr. Gibbs’ motto(座右铭) may be .
A. “Seeing is believing” B. “Put everything in proper use”
C. “Practice makes perfect” D. “No pain, no gain”
The underlined word robust in Para.5 most probably means _________.
A. strong B. strange C. deep D. old
Which of the following may be the author’s best prayer for his two sons now?
A. I wish them strong wings, with which they can fly higher and touch the sky.
B. I wish them nice fortune so that they can meet people like Dr. Gibbs in the future.
C. I wish them deep roots into the earth since the rains fall and the winds blow often.
D. I wish them great shades under the tree since the sunlight is always sharp and bitter.
Which of the following can be the best title of this passage?
A Nice Doctor B. The Deep Roots C. Adversity and Suffering D. My Childhood Memory
查看习题详情和答案>>Although Thomas Edison created the technologies behind three major 21st century industries electrical power，recorded music and movies—his greatest invention may have been the modern method of inventing．He basically came up with the modern system of research and development．Edison was not the only scientist doing research in his garage but someone who gathered around him a team of creative scientific minds．Edison’s 1aboratories were the forerunners（ 先驱）of Apple，Google and Microsoft．
Yet for a11 his scientific gifts，he was no Steve Jobs or Bill Gates．He once said，“Anything that won’ t sell，I don’ t want to invent．” But Edison，unlike Jobs or Gates，had no real sense of what the public wanted or how to change his discoveries into products that might sell．It took him years to understand that the phonograph（ 留声机）was not a business tool but an entertainment invention．He helped create movies but resisted the idea that people might want to go into a theater to watch one．
We chose Edison this year because we need his example now more than ever．Though we live in a time of great reformation，the U．S．is in danger of losing its advantage in science and technology．American investment（ 投资）in research and development has not increased as a percentage of GDP since the mid一1980s，while the government’ s share has been dropping．And this is at a time when China is rapidly increasing its money on research and development．The U．S．was once among the 1eading nations．Now it ranks near the bottom of the 23 nations that collect such data．We hope that Edison’ s story might not only encourage reformation but also inspire more
young Americans to study science and engineering．
The first paragraph is mainly about .
A．the number of Edison’ s great inventions
B．Edison’ s special personal characters
C．Edi son’ s modern system of research
D．Apple．Google and Microsoft and their forerunners
Which of the following is TRUE according to the passage?
A．A11 the things Edison invented sold well．
B．Edison wanted to invent things that sold well．
C．Edison’ s inventions were not valuable for being unpopular．
D．Edison had a gift for changing his discoveries into best sellers.
The author’ s main purpose is to ．
A．inform US of the danger the USA is in
B．get young Americans to study science
C．be in honor of Edison for his contributions
D．tell US how important Edison’ s inventions are
We can infer from the text that ．
A．the USA is no 10nger advanced in science and technology
B．the USA falls behind China in research and inventions
C．more and more young Americans will be interested in science
D．China is spending more and more money on research and development
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