Sugar is so much a part of our modern life that we only think about it when, for some reason, we cannot obtain it. It has been known to man for at least 3,000 years, but has come into common use only 题目和参考答案——青夏教育精英家教网—

题目内容

Sugar is so much a part of our modern life that we only think about it when, for some reason, we cannot obtain it. It has been known to man for at least 3,000 years, but has come into common use only in modern times. Until quite recently it was considered as a medicine and as a luxury for the rich only.

Sugar is, then, very important to our civilization. But what exactly is it? Of course, most of us recognize sugar immediately as the sweet material which we put in coffee or cakes. This common form of sugar is from two plants: the sugar cane (a type of grass which grows to a height of 20 feet) and the sugar beet (which grows underground). But in fact there are many types of sugar, and the chemist recognizes hundreds of different varieties, each coming from a different source.

About 90% of the sugar is produced as food. Only 10% is used in industry for purposes other than food production. Yet sugar has great possibilities for use as the basis of chemicals. It can even be used for making plastics. In the future these potential uses will certainly be developed more than in the past. There are many reasons why we should increase the production of sugar. Most important is that it is one of the most highly concentrated energy foods. Thus sugar cane and beet produce an average of 7,000,000 calories per acre. In this way they have the advantages over potatoes which give only 4,000,000, while the figure for wheat and beans is 2,000,000 each. So three acres of land growing wheat, beans and potatoes give only slightly more energy than one acre of sugar.

1．The heading of Paragraph One may be ______.

A．What Sugar Is B．Sugar Through Ages

C．The Advantages of Sugar D．Present And Future Uses of Sugar

2．The third paragraph emphasizes (强调) ______.

A．about 90% of sugar is used as food B．only 10% is used in industry

C．sugar used for making plastics D．future uses of sugar

3．Sugar has been used widely ______.

A．for 3,000 years B．in modern times

C．until quite recently D．for 300 years

4．The main reason why we should increase the production of sugar is that ______.

A．sugar tastes sweet B．we can save plenty of land

C．we can take in more energy D．it provides much energy

BDBD

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“What’s in a name?”According to Shakespeare’s Romeo and Juliet, there is not too much. “That which we call a rose by any other name would smell as sweet. ”But Shakespeare may have been wrong. In most cultures, names matter a great deal.

Americans choose names for their children with care. Parents usually think about the impression a name gives, not its meaning. Most Americans would consider a“Jennifer”more attractive than a “Bertha”, for example. The last name, or, surname, must also be considered when choosing a first and middle name. A name like Lester Chester Hester would sound poetic, but odd. Parents would avoid names that remind them of people they don’t like. On the other hand, people might name their children after a respected elderly relative or even a famous person. The popularity of certain names can change with each new generation. Names that were once common, like Fanny or Elmer, sound old-fashioned today. But other names—like John and David, Mary and Sarah—have stood the test of time and continue to be favorites.

People in America don’t always call their friends and relatives by their given names. Instead, they often use nicknames. Sometimes nicknames are short forms of a longer name. For instance, a girl named Elizabeth may be called Lisa, Beth or Betsy. As children grow up, they may decide for themselves which nickname they wish to be called. Some people just go by the initials of their first and middle names, like B. J. or R. C. And of course, people may call their children or their sweethearts other special nicknames. Often they have a “sweet” flavor, like Honey or Sugar. What’s in a name? A world of significance. So if you’re choosing an English name for yourself, take care to choose a good one. A made-up name could sound strange to native English speakers. And a translation of your Chinese name may not make an appropriate name, either. But a good name can leave a positive and lasting impression. As an American politician once said,“In real life, unlike in Shakespeare, the sweetness of the rose depends upon the name it bears.”

What does the underlined sentence in paragraph 2 mean?

A. People change names in order to be popular with the new generation.

B. Names will change by themselves in order to be popular.

C. Some names may no longer be popular among the new generation.

D. No names can stand the test of time.

When choosing names, you should stick to the following principles except that _________.

A. the impression a name gives is more important than its meaning

B. you can name after a well-known person

C. surname should be paid attention to

D. you can create a name that is special

The word “initial” in paragraph 3 probably means .

A. nickname B. the first letter C. short form D. title

The author will name a newly born baby girl .

A. Bertha B. Fanny C. Yunyun D. Elizabeth

What is the main idea of this passage?

A. Names have great significance to Americans.

B. Names change when time goes by.

C. Chinese people should be careful when choosing their English names.

D. Roses smell sweet by any other name.

We all enjoy the colors of autumn leaves. Did you ever wonder how and why a fall leaf changes color? Where do the yellows and oranges come from? To answer those questions, we first have to understand what leaves are and what they do.
Leaves are nature's food factories. Plants take water from the ground through their roots. They take a gas called carbon dioxide from the air. Plants use sunlight to turn water and carbon dioxide into glucose, which is a kind of sugar. Plants use glucose as food for energy and as a building block for growing. The way plants turn water and carbon dioxide into sugar is called photosynthesis, which means " putting together with light. " A chemical called chlorophyll helps make photosynthesis happen. Chlorophyll is what gives plants their green color.
As summer ends and autumn comes, the days get shorter and shorter. This is how the trees "know" to begin getting ready for winter.
During winter, there is not enough light or water for photosynthesis. The trees will rest, and live off the food they stored during summer. They begin to shut down their food-making factories. The green chlorophyll disappears from the leaves. As the bright green fades away, we begin to see yellow and orange colors. Small a-mounts of these colors have been in the leaves all along. Covered up by the green chlorophyll, we just can't see them in summer.
The bright reds and purples we see in leaves are made mostly in the fall. In some trees, like maples, glucose is trapped in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn cause the leaves turn this glucose into a red color. The brown color of trees like oaks is made from wastes left in the leaves.
It is the combination of all these things that make the beautiful colors we enjoy in the fall.
【小题1】The writer asked two questions in the beginning in order to .

A．persuade readers to believe something

B．introduce the topic of the passage

C．get the readers excited

D．offer something to think over

【小题2】 Which of the following is True according to the passage?

A．Trees don't change colours with seasons.

B．Trees can still perform photosynthesis well in winter.

C．Trees have colours like yellow and orange even in summer.

D．Trees don't need food in winter.

【小题3】Photosynthesis is a way that ___________________________.

A．plants change water and carbon dioxide into sugar

B．plants turn water and carbon dioxide into sugar with the help of sunlight

C．plants use glucose as food for energy and growing

D．chlorophyll is a great help

【小题4】 Which is the best title for this passage?

A．Colorful trees in autumn	B．Mysteries of tree colors
C．Do you enjoy tree colors?	D．Wonderful colors in autumn

认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入一个最恰当的单词。
注意：每个空格只填1个单词。请将答案写在答题卡相应题号的横线上。
Modern science proves that a healthy lifestyle matters much to how long you can live and how well you live. Here are some tips for you to form a healthy lifestyle.
Keep in mind that sugar can be removed from our diet completely. Over intake (摄入量) of sugar is one of the main reasons for getting fat. Over intake of protein or fat and low intake of fiber can also lead to getting fat. We only need a few grams of protein to keep our body in order.
There is a relationship between the mood and health. A good mood keeps you in high spirits. Thanks to the Internet, we can enjoy and learn much without going out. Take a look at some online shops and pick up some bargains, enjoy music and movies and chat with good friends. Just keep happy.
Two studies show the reasons why teens and adults don't have enough sleep. With teens, a major reason is mobile phone use; with adults, it's work. Meanwhile, a third study of young children shows that lack of sleep in early life may lead to serious problems in future. Everyone needs at least 8-hour sleep to recover from tiredness and the hurt caused by hard work in the daytime.
Do exercise to keep away from fatness. Because of the quick pace of the modern life, you don't have time to do exercise every day, but at least three times a week and 45 minutes each time.

Keep a scientific 【小题1】____	【小题2】 ____ for getting fat ●Taking in too much【小题3】___ ●Having protein or fat.
Be always in a good 【小题4】 ____	Relationship between the mood and health ●A good mood keens you in high【小题5】 ____
Enough sleep.	Factors affecting people's sleep ●Teens don't sleep enough because of mobile phone use while adults because of 【小题6】____ ●In order to recover, we need at least an 【小题7】____ sleep every day.
Proper exercise.	●Exercise prevents us from being 【小题8】____ ●We need to exercise at least three times a week and three 【小题9】____ each time.

Leaves are nature's food factories. Plants take water from the ground through their roots. They take a gas called carbon dioxide from the air. Plants use sunlight to turn water and carbon dioxide into glucose, which is a kind of sugar. Plants use glucose as food for energy and as a building block for growing. The way plants turn water and carbon dioxide into sugar is called photosynthesis, which means " putting together with light. " A chemical called chlorophyll helps make photosynthesis happen. Chlorophyll is what gives plants their green color.

As summer ends and autumn comes, the days get shorter and shorter. This is how the trees "know" to begin getting ready for winter.

During winter, there is not enough light or water for photosynthesis. The trees will rest, and live off the food they stored during summer. They begin to shut down their food-making factories. The green chlorophyll disappears from the leaves. As the bright green fades away, we begin to see yellow and orange colors. Small a-mounts of these colors have been in the leaves all along. Covered up by the green chlorophyll, we just can't see them in summer.

The bright reds and purples we see in leaves are made mostly in the fall. In some trees, like maples, glucose is trapped in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn cause the leaves turn this glucose into a red color. The brown color of trees like oaks is made from wastes left in the leaves.

It is the combination of all these things that make the beautiful colors we enjoy in the fall.

1.The writer asked two questions in the beginning in order to .

A. persuade readers to believe something

B. introduce the topic of the passage

C. get the readers excited

D. offer something to think over

2. Which of the following is True according to the passage?

A. Trees don't change colours with seasons.

B. Trees can still perform photosynthesis well in winter.

C. Trees have colours like yellow and orange even in summer.

D. Trees don't need food in winter.

3.Photosynthesis is a way that ___________________________.

A. plants change water and carbon dioxide into sugar

B. plants turn water and carbon dioxide into sugar with the help of sunlight

C. plants use glucose as food for energy and growing

D. chlorophyll is a great help

4. Which is the best title for this passage?

A. Colorful trees in autumn B. Mysteries of tree colors

C. Do you enjoy tree colors? D. Wonderful colors in autumn

"What’s in a name?”According to Shakespeare’s Romeo and Juliet，there is not too much.“That which we call a rose by any other name would smell as sweet. "But Shakespeare may have been wrong. In most cultures，names matter a great deal.

Americans choose names for their children with care. Parents usually think about the impression a name gives，not its meaning. Most Americans would consider a “Jennifer” more attractive than a“Bertha"，for example. The last name，or，surname，must also be considered when choosing a first and middle name. A name like Lester Chester Hester would sound poetic，but odd. Parents would avoid names that remind them of people they don’t like. On the other hand，people might name their children after a respected elderly relative or even a famous person. The popularity of certain names can change with each new generation. Names that were once common，like Fanny or Elmer，sound old-fashioned today. But other names—like John and David，Mary and Sarah—have stood the test of time and continue to be favorites.

People in Ameica don’t always call their friends and relatives by their given names. Instead，they often use nicknames. Sometimes nicknames are short forms of a longer name. For instance，a girl named Elizabeth may be called Lisa，Beth or Betsy. As children grow up，they may decide for themselves which nickname they wish to be called.

Some people just go by the initials of their first and middle names，like B. J, or R. C. And of course，people may call their children or their sweethearts other special nicknames. Often they have a “sweet” flavor，like Honey or Sugar. What’s in a name? A world of significance. So if you’re choosing an English name for yourself，take care to choose a good one. A made—up name could sound strange to native English speakers. And a translation of your Chinese name may not make an appropriate name，either. But a good name can leave a positive and lasting impression. As an American politician once said，“In real life，unlike in Shakespeare，the sweetness of the rose depends upon the name it bears.”

1.What does the underlined sentence in Paragraph 2 mean?

A. People change names in order to be popular with the new generanon.

B. Names will change by themselves in order to be popular.

C. Some names may no longer be popular among the new generation.

D. No names can stand the test of time.

2.When choosing names，you should stick to the following principles EXCEPT that

A. the impression a name gives is more important than its meaning

B. you can name after a well-known person

C.surname should be paid attention to

D.you can create a name that is special

3.The author will name a newly born baby girl________.

A． Bertha B. Fanny C. Yunyun D.Elizabeth

4.What is the main idea of this passage?

A. Names have great significance to Americans.

B.Names change when time goes by.

C. Chinese people should be careful when choosing their English names.

D.Roses smell sweet by any other name.

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