---Why hasn’t Jane arrived yet? ---She again in the morning. A. shouldn’t have overslept B. may have turned off the alarm clock C. must have no one to call her D. should have someone to wake her up 题目和参考答案——青夏教育精英家教网—

题目内容

---Why hasn’t Jane arrived yet?

---She ______ again in the morning.

A. shouldn’t have overslept

B. may have turned off the alarm clock

C. must have no one to call her

D. should have someone to wake her up

【答案】

【解析】

试题分析：句意：对不起。我迟到了。我可能是把闹钟关了，又睡回笼觉了。might 表示“有可能...”。 might have done sth. 是常用句型，表示在过去可能做了什么。用should（n’t） have done就表示“过去（不）应该做而没做（做了）”，must have done过去一定做了，选B。

考点：考查情态动词的完成式

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－That is ________ all languages change when cultures communicate with one another．

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A．because

B．why

C．how

D．for which

Unfortunately, the more industrialized we become the farther away we move from direct contact with plants, and the less distinct our knowledge of botany grows. Yet everyone comes unconsciously on an amazing amount of botanical knowledge, and few people will fail to recognize a rose, an apple, or an orchid. When our Neolithic ancestors, living in the Middle East about 10,000 years ago, discovered that certain grasses could be harvested and their seeds planted for richer productions the next season, the first great step in a new association of plants and humans was taken. Grains were discovered and from them flowed the wonder of agriculture; cultivated crops. From then on, humans would increasingly take their living from the controlled production of a few plants, rather than getting a little here and a little there from many varieties that grew wild and the built up knowledge of tens of thousands of years of experience and close relationship with plants in the wild would begin fade away.

Which of the following statements about early humans is expressed in the passage?

A. They probably had extensive knowledge of plants.

B. They thought there was no need to cultivate crops.

C. They did not enjoy the study of botany.

D. They placed great importance on the ownership of property.

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A. There is no clear way to determine the extent of our ancestor’s knowledge of plants.

B. It is not surprising that early humans had a detailed knowledge of plants.

C. It is reasonable to assume that our ancestors behaved very much like people in pre-industrial societies.

D. Human knowledge of plants is well organized and very detailed.

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A. People no longer value plants as a useful resource.

B. Botany is not recognized as a special branch of science.

C. Research is unable to keep up with the increasing numbers of plants.

D. Direct contact with a variety of plants has decreased.

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A. To make the passage more poetic.

B. To give an example of plant that are attractive.

C. To give botanical examples that all readers will recognize.

D. To explain the variety of botanical life.

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A. The invention of agricultural tools and machinery.

B. The development of a system of names for plants.

C. The discovery of grasses that could be harvested and replanted.

D. The changing diets of early humans.

“Sesame Street” has been called “the longest street in the world”. That is because the television program by that name can now be seen in so many parts of the world. That program became one of American’s exports soon after it went on the air in New York in 1969.

In the United States more than six million children watch the program regularly. The viewers include more than half the nation’s pre-school children, from every kind of economic, racial, and geographical group.

Although some educators object to certain elements in the program, parents praise it highly. Many teachers also consider it a great help, though some teachers find that problems arise when first graders who have learned from “Sesame Street” are in the same class with children who have not watched the program.

Tests have shown that children from all racial, geographical, and economic backgrounds have benefited from watching it. Those who watch it five times a week learn more than occasional (偶然的) viewers. In the US the program is shown at different hours during the week in order to increase the number of children who can watch it regularly.

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49. “Sesame Street” is actually ____.

A. a street in the US B. a program for children

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50. Children who often watch the program ____.

A. can have problems in school

B. will find it a great help

C. will take no interest in their studies

D. will be well educated

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A. It offers great fun.

B. It makes children feel able to learn.

C. It is shown at different hours during the week.

D. Children learn and enjoy themselves while watching.

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A. Because it is supported by the government and businesses.

B. Because it uses a variety of skillful tricks.

C. Because mothers watch it along with their children.

D. Because it makes every child watching it feel able to learn.

Botany, the study of plants, occupies a special position in the history of human knowledge. For many thousands of years it was the one field of awareness about which humans had anything more than the vaguest (含糊的) of insight. It is impossible to know today just what our Stone Age ancestors knew about plants, but from what we can observe of pre-industrial societies that still exist, a detailed learning of plants and their properties must extremely ancient. This is logical. Plants are the basis of the food pyramid for all living things, even for other plants. They have always been enormously important to the welfare of peoples, not only for food, but also for clothing, weapons, tools, eyes, medicines, shelter, and a great many other purposes. Tribes living today in the jungles of the Amazon recognized accurately hundreds of plants and know many properties of each. To them, botany, as such, has no name and is probably not even recognized as a special branch of knowledge at all.
Unfortunately, the more industrialized we become the farther away we move from direct contact with plants, and the less distinct our knowledge of botany grows. Yet everyone comes unconsciously on an amazing amount of botanical knowledge, and few people will fail to recognize a rose, an apple, or an orchid. When our Neolithic ancestors, living in the Middle East about 10,000 years ago, discovered that certain grasses could be harvested and their seeds planted for richer productions the next season, the first great step in a new association of plants and humans was taken. Grains were discovered and from them flowed the wonder of agriculture; cultivated crops. From then on, humans would increasingly take their living from the controlled production of a few plants, rather than getting a little here and a little there from many varieties that grew wild and the built up knowledge of tens of thousands of years of experience and close relationship with plants in the wild would begin fade away.
1. Which of the following statements about early humans is expressed in the passage?
A. They probably had extensive knowledge of plants.
B. They thought there was no need to cultivate crops.
C. They did not enjoy the study of botany.
D. They placed great importance on the ownership of property.
2. What does the comment “This is logical.” In the first paragraph mean?
A. There is no clear way to determine the extent of our ancestor’s knowledge of plants.
B. It is not surprising that early humans had a detailed knowledge of plants.
C. It is reasonable to assume that our ancestors behaved very much like people in pre-industrial societies.
D. Human knowledge of plants is well organized and very detailed.
3. According to the passage, why has general knowledge of botany begun to fade?
A. People no longer value plants as a useful resource.
B. Botany is not recognized as a special branch of science.
C. Research is unable to keep up with the increasing numbers of plants.
D. Direct contact with a variety of plants has decreased.
4. In the second paragraph, what is the author’s purpose in mentioning “ a rose, an apple, or an orchid”?
A. To make the passage more poetic.
B. To give an example of plant that are attractive.
C. To give botanical examples that all readers will recognize.
D. To explain the variety of botanical life.
5. According to the passage, what was the first great step toward the practice of agriculture?
A. The invention of agricultural tools and machinery.
B. The development of a system of names for plants.
C. The discovery of grasses that could be harvested and replanted.
D. The changing diets of early humans.

In the kitchen of my mother’s houses there has always been a wooden stand（木架）with a small notepad（记事本）and a hole for a pencil.

I’m looking for paper on which to note down the name of a book I am recommending to my mother. Over forty years since my earliest memories of the kitchen pad and pencil, five houses later, the current paper and pencil look the same as they always did. Surely it can’t be the same pencil? The pad is more modern, but the wooden stand is definitely the original one.

“I’m just amazed you still have the same stand for holding the pad and pencil after all these year.” I say to her, walking bank into the living-room with a sheet of paper and the pencil. “You still use a pencil. Can’t you afford a pen?”

My mother replies a little sharply. “It works perfectly well. I’ve always kept the stand in the kitchen. I never knew when I might want to note down an idea, and I was always in the kitchen in these days.”

Immediately I can picture her, hair wild, blue housecoat covered in flour, a wooden spoon in one hand, the pencil in the other, her mouth moving silently. My mother smiles and says, “One day I was cooking and watching baby Pauline, and I had a brilliant thought, but the stand was empty. One of the children must have taken the paper. So I just picked up the breadboard and wrote it all down on the back. It turned out to be a real breakthrough for solving the mathematical problem I was working on.”

This story—which happened before I was born—reminds me how extraordinary my mother was, and is, as a gifted mathematician. I feel embarrassed that I complain about not having enough child-free time to work. Later, when my mother is in the bathroom, I go into her kitchen and turn over the breadboards. Sure enough, on the back of the smallest one, are some penciled marks I recognize as mathematics. Those symbols have traveled unaffected through fifty years, rooted in the soil of a cheap wooden breadboard, invisible（看不到的）exhibits at every meal.

1．Why has the author’s mother always kept the notepad and pencil in the kitchen?

A．To leave messages. B．To list her everyday tasks.

C．To note down maths problems. D．To write down a flash of inspiration.

2. What is the author’s original opinion about the wooden stand?

A. It has great value for the family.

B. It needs to be replaced by a better one.

C. It brings her back to her lonely childhood.

D .It should be passed on to the next generation.

3. The author feels embarrassed for_______.

A. blaming her mother wrongly.

B. giving her mother a lot of trouble.

C. not making good use of time as her mother did.

D. not making any breakthrough in her field.

4. What can be inferred from the last paragraph?

A .The mother is successful in her career.

B. The family members like traveling.

C. The author had little time to play when young.

D. The marks on the breadboard have disappeared.

5. In the author’s mind ,her mother is_________.

A. strange in behavior. B. keen on her research.

C. fond of collecting old things. D. careless about her appearance.

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