Glass is and must be handled with great care.A.sensitiveB.smoothC.flexibleD.fragile 题目和参考答案——青夏教育精英家教网—

The making of glass is a very old industry—at least 4 500 years old. Glass has many extraordinary qualities and it is frequently being used in new ways. One of the most interesting new uses for glass is in telephone communication. Scientists have developed glass fibers as thin as human hair which are designed to carry light signals. When the light reaches the other end, it is first changed into electrical signals, which are in turn converted(转变) into sound messages. Called light wave communication， the new system was used successfully in an experiment in Chicago in 1977. During the experiment two glass fibers were able to carry 672 conversations at the same time. The light wave cable, containing 144 glass fibers, has the capacity(容量) to carry 50 000 conversations at the same time. The light wave communication system has two important advantages. First the glass fiber cables are smaller and weigh less than copper(铜) cables; second, they cost less.

1. One of the extraordinary qualities of glass is that it can carry_______.

A. any signal 　　　　　　　　　　　　　　　　　　 B. light signals

C. sound signals 　　　　　　　　　　　　　　　　 D. electrical signals

2. Before you can hear a message on the telephone using the new system_______.

A. the light signals have to be changed into electrical sound

B. neither the light nor the electrical signals have to be changed in any way

C. light must first be changed into electrical signals and then into sound

D. electrical signals must first be changed into light signals and then into sound

3. According to the passage the new telephone communication system_______.

A. was put on experiment in 1977

B. had been put into actual use by 1977

C. had been repeatedly experimented before 1977

D. was first put into actual use in 1977

4. From the passage, you can tell that people prefer glass fiber cables to copper cables because_______.

A. glass fiber is easier to make

B. glass fiber is less expensive

C. glass fiber is more up to date

D. glass fiber delivers messages directly

5. Which of the following statements best expresses the main idea of the passage?

A. Light signals have changed the use of glass in industry.

B. Glass fibers have reduced the cost of telephone communication.

C. Glass is very useful because it has many unusual qualities.

D. The use of glass fibers to carry telephone messages is an interesting new development.

C
Invented in Turkey and patented by Nanopool, a German company, the spray-on liquid glass might become one of the most useful inventions in the field of nanotechnology. The product was tested at the Saarbrücken Institute for New Materials.
It is worth mentioning that the invention is transparent and non-poisonous. The liquid glass can protect any type of surface from damages caused by water, UV radiation, dirt, heat, and bacterial infections. Besides, it is flexible and breathable, which means that the liquid glass can be applied on plants and seeds as well. Researchers found that the spray greatly increases the resistance of plants to bacteria-caused diseases. The trials also showed that the sprayed seeds grew faster.
Depending on the type of surface that is to be covered, researchers can add water or ethanol to the spray. Scientists say that their latest invention has a long-lasting anti-bacterial effect. The spray produces a coating that is just 100nm thick. Trials by food processing plants in Germany have concluded that foods covered with the glass can store longer than those stored in normal condition.
According to Neil McClelland, UK project manager with Nanopool, due to its capabilities, the spray-on liquid glass can become one of the most useful inventions around the world, ending up being used by a lot of industries that will cover their products. At present, the invention is being used by a train company and a hotel chain in the UK, as well as a hamburger chain in Germany that are carrying out tests of the liquid glass for various uses.
The spray-on liquid glass was also tested in a Lancashire hospital, where it showed “very promising” results, being used to cover medical equipment and bandages. The invention could be also used on clothing, because it cannot be seen by the naked eye, thus clothes could become stain resistant. Due to its unique characteristics, the liquid glass can be used to cover bathrooms, sinks and many other surfaces in the home. According to the researchers, the spay-on glass can last for a year. It is expected to hit the DIY stores across Britain at a price of 5 pounds.
51. Which of the following about the liquid glass is NOT true?
A. We can still see an object clearly covered with the liquid.
B. It will cause plants to have some kind of disease.
C. Plants still have access to oxygen when covered by it.
D. It can speed up the growth of seeds.
52. What does the underlined sentence in Paragraph 3 imply?
A. Water or ethanol must be added to the spray to produce the effect.
B. The coating of the spray-on liquid is thick.
C. The liquid glass can protect foods from bacteria.
D. The long-lasting anti-bacterial effect protects the liquid glass.
53. According to Neil McClelland, the spray-on liquid glass_________.
A. are being tested by some industries
B. are being used by various companies
C. can be eaten together with hamburgers
D. are widely used by train companies
54. The writer’s attitude towards the application of the new liquid glass is _________.
A. pessimistic B. doubtful C. cautious D. optimistic
55. What can be inferred from the passage?
A. We don’t have to wash our clothes with the new invention.
B. The liquid glass can be used to wash yourself in the bathroom..
C. The liquid glass will be widely used in many fields.
D. The DIY stores will not welcome the liquid glass.

C

Invented in Turkey and patented by Nanopool, a German company, the spray-on liquid glass might become one of the most useful inventions in the field of nanotechnology. The product was tested at the Saarbrücken Institute for New Materials.

It is worth mentioning that the invention is transparent and non-poisonous. The liquid glass can protect any type of surface from damages caused by water, UV radiation, dirt, heat, and bacterial infections. Besides, it is flexible and breathable, which means that the liquid glass can be applied on plants and seeds as well. Researchers found that the spray greatly increases the resistance of plants to bacteria-caused diseases. The trials also showed that the sprayed seeds grew faster.

Depending on the type of surface that is to be covered, researchers can add water or ethanol to the spray. Scientists say that their latest invention has a long-lasting anti-bacterial effect. The spray produces a coating that is just 100nm thick. Trials by food processing plants in Germany have concluded that foods covered with the glass can store longer than those stored in normal condition.

According to Neil McClelland, UK project manager with Nanopool, due to its capabilities, the spray-on liquid glass can become one of the most useful inventions around the world, ending up being used by a lot of industries that will cover their products. At present, the invention is being used by a train company and a hotel chain in the UK, as well as a hamburger chain in Germany that are carrying out tests of the liquid glass for various uses.

The spray-on liquid glass was also tested in a Lancashire hospital, where it showed “very promising” results, being used to cover medical equipment and bandages. The invention could be also used on clothing, because it cannot be seen by the naked eye, thus clothes could become stain resistant. Due to its unique characteristics, the liquid glass can be used to cover bathrooms, sinks and many other surfaces in the home. According to the researchers, the spay-on glass can last for a year. It is expected to hit the DIY stores across Britain at a price of 5 pounds.

51. Which of the following about the liquid glass is NOT true?

A. We can still see an object clearly covered with the liquid.

B. It will cause plants to have some kind of disease.

C. Plants still have access to oxygen when covered by it.

D. It can speed up the growth of seeds.

52. What does the underlined sentence in Paragraph 3 imply?

A. Water or ethanol must be added to the spray to produce the effect.

B. The coating of the spray-on liquid is thick.

C. The liquid glass can protect foods from bacteria.

D. The long-lasting anti-bacterial effect protects the liquid glass.

53. According to Neil McClelland, the spray-on liquid glass_________.

A. are being tested by some industries

B. are being used by various companies

C. can be eaten together with hamburgers

D. are widely used by train companies

54. The writer’s attitude towards the application of the new liquid glass is _________.

A. pessimistic B. doubtful C. cautious D. optimistic

55. What can be inferred from the passage?

A. We don’t have to wash our clothes with the new invention.

B. The liquid glass can be used to wash yourself in the bathroom..

C. The liquid glass will be widely used in many fields.

D. The DIY stores will not welcome the liquid glass.

Invented in Turkey and patented by Nanopool, a German company, the spray-on liquid glass might become one of the most useful inventions in the field of nanotechnology. The product was tested at the Saarbrücken Institute for New Materials.

It is worth mentioning that the invention is transparent and non-poisonous. The liquid glass can protect any type of surface from damages caused by water, UV radiation, dirt, heat, and bacterial infections. Besides, it is flexible and breathable, which means that the liquid glass can be applied on plants and seeds as well. Researchers found that the spray greatly increases the resistance of plants to bacteria-caused diseases. The trials also showed that the sprayed seeds grew faster.

Depending on the type of surface that is to be covered, researchers can add water or ethanol to the spray. Scientists say that their latest invention has a long-lasting anti-bacterial effect. The spray produces a coating that is just 100nm thick. Trials by food processing plants in Germany have concluded that foods covered with the glass can store longer than those stored in normal condition.

According to Neil McClelland, UK project manager with Nanopool, due to its capabilities, the spray-on liquid glass can become one of the most useful inventions around the world, ending up being used by a lot of industries that will cover their products. At present, the invention is being used by a train company and a hotel chain in the UK, as well as a hamburger chain in Germany that are carrying out tests of the liquid glass for various uses.

The spray-on liquid glass was also tested in a Lancashire hospital, where it showed “very promising” results, being used to cover medical equipment and bandages. The invention could be also used on clothing, because it cannot be seen by the naked eye, thus clothes could become stain resistant. Due to its unique characteristics, the liquid glass can be used to cover bathrooms, sinks and many other surfaces in the home. According to the researchers, the spay-on glass can last for a year. It is expected to hit the DIY stores across Britain at a price of 5 pounds.

51. Which of the following about the liquid glass is NOT true?

A. We can still see an object clearly covered with the liquid.

B. It will cause plants to have some kind of disease.

C. Plants still have access to oxygen when covered by it.

D. It can speed up the growth of seeds.

52. What does the underlined sentence in Paragraph 3 imply?

A. Water or ethanol must be added to the spray to produce the effect.

B. The coating of the spray-on liquid is thick.

C. The liquid glass can protect foods from bacteria.

D. The long-lasting anti-bacterial effect protects the liquid glass.

53. According to Neil McClelland, the spray-on liquid glass_________.

A. are being tested by some industries

B. are being used by various companies

C. can be eaten together with hamburgers

D. are widely used by train companies

54. The writer’s attitude towards the application of the new liquid glass is _________.

A. pessimistic B. doubtful C. cautious D. optimistic

55. What can be inferred from the passage?

A. We don’t have to wash our clothes with the new invention.

B. The liquid glass can be used to wash yourself in the bathroom..

C. The liquid glass will be widely used in many fields.

D. The DIY stores will not welcome the liquid glass.

The making of glass is a very old industry — at least 4,500years old. Glass has many extraordinary qualities and it is often being used in new ways.

One of the most interesting new uses for glass is in telephone communication. Scientists have developed glass fibers as thin as human hair which are designed to carry light signal. When the light reaches the other end, it is first changed into electrical signals, which are in turn changed into sound messages.

Called light wave communication, the new system was used successfully in an experiment in Chicago in 1977. During the experiment, two glass fibers were able to carry 672 conversations at the same time. The light wave cable, containing 144 glass fibers, is able to carry 50,000 conversations at the same time.

The light wave communication system has two important advantages. First, the glass fiber cables are smaller and weigh less than copper cables. Second, they cost less.

Perhaps it can be said that telephone communication has entered the age of light.

1．According to the passage, people started to make glass .

A．4,500 years ago B．no less than 4,500 years ago

C．less than 4,500 years ago D．nearly 4,500 years ago

2．One of the extraordinary qualities of glass is that it can carry .

A．sound signals B．light signals C．electric signals D．any signals

3．According to the passage the new telephone communication system .

A．has been put into actual use

B．was put into actual use in 1977

C．was put on experiment in 1977

D．had been repeatedly experimented on before 1977

4．Which of the following statements best expresses the main idea of the passage?

A．Glass is very useful because it has many unusual qualities．

B．Light signals have changed the use of glass in industry．

C．Glass fibres have reduced the cost of telephone communication．

D．The use of glass fibres to carry telephone messages is an interesting new development．

Glass is _______ and must be handled with great care.

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