Each cell in the human body contains about 25,000 to 35,000 genes, which carry i - 高中英语试题 - 超级试练试题库

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Each cell in the human body contains about 25,000 to 35,000 genes, which carry information that determines your traits. Traits are characteristics you inherit from your parents; this means your parents pass some of their characteristics on to you through genes. For example, if both of your parents have green eyes, you might inherit the trait of green eyes from them. Or if your mom has freckles, you might inherit that trait and wind up with a freckled face. And genes aren’t just in humans — all animals and plants have genes, too.
Genes hang out all lined up on thread-like things called chromosomes. Chromosomes come in pairs, and there are hundreds, sometimes thousands of genes in one chromosome. The chromosomes and genes are made of DNA, which is short for deoxyribonucleic acid.
Chromosomes are found inside cells, the very small units that make up all living things. A cell is so tiny that you can only see it through the lens of a strong microscope, and there are billions of cells in your body. Most cells have one nucleus. The nucleus, which is sort of egg-shaped, is like the brain of the cell. It tells every part of the cell what to do. How does the nucleus know so much? It contains our chromosomes and genes. Tiny as it is, the nucleus has more information in it than the biggest dictionary you’ve ever seen.
71. What is the best title of this passage?
A. What Is a Gene?                    B. How Do Genes Work?
C. What Does A Gene Consist of?         D. How Do Nucleus Command Cells?
72. What does the underlined word “inherit” probably mean in the first paragraph?
A. carry          B. send        C. obtain           D. pass
73. Which of the following is NOT true according to the passage?
A. The parents pass some characteristics on to their children.
B. All living things receive traits from the old generations.
C. One’s green eyes might be passed on from the parents.
D.A mother’s freckled face might affect her young’s face.
74. From the passage we can know that______________.
A. genes can decide all your characteristics from parents.
B. genes exist inside cells that make up all living things.
C. genes tells every part of the cell what to do .
D. Chromosomes come in pairs containing genes.
75. From the passage we can conclude that ___________.
A. not all cells have one nucleus inside .
B. not all living things are made up of cells.
C. genes aren’t in humans but in animals and plants.
D. DNA is made of chromosomes and genes.

答案

小题1:A
小题2:C
小题3:B
小题4:B
小题5:A

解析

核心考点

试题【Each cell in the human body contains about 25,000 to 35,000 genes, which carry i】；主要考察你对题材分类等知识点的理解。[详细]

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II 阅读理解（共25小题。第一节每小题2分，第二节每小题1分；满分45分）
第一节阅读下列短文，从每题所给的四个选项（ A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
　　The Opera house in Santa Fe. New Mexico is one of the most beautiful ones in the United States. It is small and open, with one roof over the stage where singers perform and another roof over part of the audience. This opera house in the mountain is one of the best in the country, which may seem surprising because performances are only given during seven weeks in the summer, and because Santa Fe is a very small city.
　　One reason why the Santa Fe Opera is so good is that it attracts many excellent young singers. They all hope to sing in famous opera houses like Metropolitan in New York someday, and they work hard to become well-known during the summer. The musicians and directors are experts who come from the best orchestras(管弦乐队) and operas in the country during their vacations. They enjoy working there because they like to live in Santa Fe, which is near both the mountains and the desert. It is very beautiful there in the summer.
　　The state government of New Mexico advertises the Santa Fe Opera in newspapers all over the country, and a great many tourists come to New Mexico because of the opera. Still, most of the audience does come from Santa Fe and other nearby cities, and all the seats in the theater are sold for every show.
　　There is only one thing that some people do not like about the Santa Fe Opera, and that is the cold weather. Because the theater is open, performances cannot start before it gets dark at nine o"clock in the evening, and then the mountain air becomes very cool. Sometimes people complain about the cold air, but because the operas are good, these people come back again---wearing warm coats.
　　41.This passage mainly introduces _____.
　　A. a mountain city　B. young musicians C. an opera house　D. the tourism in Santa Fe
　　42.Young singers come to perform in Santa Fe Opera because _____.
　　A. the music quality is high　　　　　　 B. they enjoy the climate there
　　C. they want to be famous　　　　　　　　D. they like the scenery there
　43.It seems surprising that Santa Fe becomes famous because _____.
　　A. it is only a very small place B. it is between the mountain and desert
　　C. all the seats are old for every show D. musicians there are from the best orchestras
　44.From the passage, we can learn that _____.
　A. the opera house is open without any roofs B. musicians always spend vacations in Santa Fe
　C. the government advertises to attract more musicians
　　D. performances are held in Santa Fe only after sunset
　45.The underlined word“advertise”in Paragraph 3 means _____.
　　A. forces others to read　 B. cheats people to come C. supports　D. praises

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The day will come when my body will lie upon a white sheet neatly folded in under the four corners of a mattress located in a hospital busily occupied with the living and the dying. At a certain moment, a doctor will determine that my brain has ceased to function and that, to all intents and purposes, my life has stopped.
When that happens, do not attempt to instill artificial life into my body by the use of a machine. And don"t call this my deathbed. Let it be called the Bed of Life, and let my body be taken from it to help others lead fuller lives.
Give my sight to the man who has never seen a sunrise, a baby"s face or love in the eye of a woman. Give my heart to a person whose own heart has caused nothing but endless days of pain. Give my blood to the teenager who was pulled from the wreckage of his car, so that he might live to see his grandchildren play. Give my kidneys to one who depends on a machine to exist. Take my bones, every muscle, every fiber and nerve in my body, and find a way to make a crippled child walk.
Explore every corner of my brain. Take my cells, if necessary, and let them grow so that, someday, a speechless boy will shout at the crack of a bat, and a deaf girl will hear the sound of rain against her window.
Burn what is left of me and scatter the ashes to the winds to help the flowers grow. If you must bury something, let it be my faults, my weaknesses and all prejudice against my fellow man.
If, by chance, you wish to remember me, do it with a kind deed or word to someone who needs you. If you do all I have asked, I will live forever.
68. What does the underlined part "to all intents and purposes" in tire first paragraph mean?
A, actually B. occasionally C. meaningfully D. interestedly
69. How many things does the author mention should be contributed to others in the passage?
A. less than five B. six C. seven D. more than eight
70. The author is not the kind of person who____________.
A. is selfish but great B. is brave and kind C. has a spirit of sacrifice D. is noble-minded
71. What the author realty wants to stress in the last two paragraphs is
A. the need to persuade to do everything more gently
B. kindness to others even in death
C. living forever makes us remembered
D. we should make the world more attractive

题型：不详难度：| 查看答案

Botswana lies immediately to the north of South Africa. It is bordered on the north and west by Namibia, on the north and east by Zimbabwe, and is connected by a narrow strip of land on the northern border to Zambia. Its territory consists almost entirely of a broad, flat, arid subtropical plateau(高原), though there are hills in the eastern part of the country.
In the northwest, the Okavango River empties into the Kalahari sands, creating the largest inland river delta in the world. While the Okavango Delta is home to relatively few large animals in comparison to other areas of Botswana, its clear waters and countless small islands are home to a variety of birds, plants, and smaller species of animals.
Nearby is Chobe National Park, a beautiful grassland reserve(保护区) that has gained international fame for its large elephant population. Southeast of Chobe are Botswana"s large Makgadikgadi salt pans, home to numbers of blue wildebeest, several antelope species, and those international lovers of salt pans, flamingos(a kind of birds).
Almost the entire remaining portion of the country is covered by the Kalahari Desert--a varied environment of sand and grassland. Although this area of Botswana is where few people live, it is one of the richest wildlife areas in all of Africa.
Botswana"s two largest parks, the Central Kalahari Game reserve and Gemsbok National Park, are found in this region.
Botswana"s climate can get rather cool, particularly during the dry winter months of June to August when night occasionally brings frost. The rainy summer months (December through March) are best avoided for those interested in enjoying the best game viewing conditions.
72.South Africa is to the______of Botswana.
A.east     B.north   C.south   D.west
73.In the Okavango Delta we can find______.
A.a lot of large animals         B.many small islands
C.salt pans             D.polluted waters
74.If we want to see flamingo, we should go to_______ .
A.salt pans             B.Chobe National Park
C.Kalahari Desert          D.Gemsbok National Park
75.It is suggested that tourists visit Botswana in______.
A.December   B.March C.January       D.July
76.What is the passage mainly about Botswana?
A.Location, geography and climate.     B.Living conditions, politics and salt pans.
C.Parks, animals and population. D.Animals, races and sightseeing places.

题型：不详难度：| 查看答案

For years scientists have been concerned about the effects of air pollution on the earth"s natural conditions. Some believe the air inside many houses may be more dangerous than the air outside. It may be one hundred times worse.
Indoor air pollution can cause a person to feel tired,to suffer eye pain, headache and other problems.Some pollutants(污染物)can cause breathing disorders,diseases of blood and even cancer. Most scientists agree that every modern house has some kind of indoor pollution.People began to notice the problem in the early 1970s.It is said that when builders began making houses and offices they did not want to waste energy.To do this,they built buildings that limited the flow of air between inside and outside.They also began using man-made building materials.These materials are now known to let out harmful gases.As the problem became more serious, scientists began searching for a way to deal with it.They discovered a natural pollution control system for building－green plants.Scientists do not really know how plants control air pollution.They believe that a plant"s leaves absorb or take in the pollutants.In exchange the plant lets out oxygen through its leaves and through its tiny organizations on its roots.Scientists suggest that all buildings should have one large plant or several small plants inside for every nine square metres of space.Studies of different plants show that each absorbs different chemicals.So the most effective way to clean the air is to use different kinds of plants.Having green plants inside your house can make it a prettier and healthier place.
77.What is the topic of the passage?
A.Air pollution.
B.Green plants indoors.
C.Indoor air pollution.
D.Environment protecting.
78.What makes indoor air pollution more harmful than that of the air outside?
A.The limited flow of air indoors.
B.Man-made building materials.
C.Fewer green plants inside houses.
D.The energy-saving materials indoors.
79.The most effective way to clean the air is to use different kinds of plants because______.
A.they can make houses pettier and healthier
B.they may let out oxygen which people need
C.they can take in all kinds of indoor pollutants
D.they can absorb different harmful indoor chemicals
80.Which of the following is implied but NOT stated?
A.keep windows open and let fresh air in.
B.Scientists have a clear idea how plants control air pollution.
C.Oxygen is let out through the leaves and roots of the plants.
D.Green plants are a natural pollution control system for building.

题型：不详难度：| 查看答案

第三部分：阅读理解（共20小题；每小题2分,满分40分）
阅读下列短文,从每篇短文后所给各题的四个选项（A、B、C和D）中,选出最佳选项,并在答题卡上将该项涂黑。
No one knows where the phrase "Indian summer" got started, we are sure that the phrase was wellknown by the year 1778,because Crevecoeur, an American writer, described it like this:"a hard frost(霜冻)follows the autumn rains. This prepares the ground to receive the snows of winter. But before the snows come, the earth turns warm once again and there are a few days of smoke and mildness called Indian summer."
There is a story about Indian summer that goes back to the very first settlers of the New World. The first frost meant winter was coming. Snow would soon follow.
The Indians, seeing the settlers preparing for winter, told them not to hurry. The weather would turn warm again, mild breezes would blow and the sky would turn soft and smoky. And so it did. The sun became hotter,and a bright warm smoke flowed over the fields and woods. The settlers, remembering the words of the Indians, called this wonderful period Indian summer.
But the Indians have their own stories about this late period of warm weather. One of their stories is about a god called Shawondasee.
Shawondasee was a sad god because he had lost the love of a tall and beautiful Indian maiden. The sad and beautiful story caught the imagination of the American poet Henry Wadsworth Longfellow. In 1855 he included the story of Shawondasee in his poem "The song of Hiawatha".
The story goes like this: God Shawondasee, fat and lazy, lived under the dreamy and never-ending southern sun. He sent birds and wild geese to the north, as well as melons and grapes. He smoked a big pipe, and as the smoke rises, it filled the sky with dreamy softness, gave a bright shine to the water and brought the tender Indian summer to the melancholy northland.
There is something about this period of warm weather that gives people a lift and makes them feel warm and happy before the long snows of winter come.
61.Which season does "Indian summer" refer to?
A. Early spring.       B. Late summer.         C. Mid-autumn.        D. Early winter.
62.Which of the following best describes the weather of this period of time?
A. Hot and humid.   B. Warm and mild.     C. Cool and bright.    D. Cold and smoky.
63.The Indians" explanation to this natural phenomenon is that God Shawondasee_______.
A. lived under the dreamy southern sun         B. took pity on the homeless settlers
C. smoked a lot because of his bad mood       D. lent his smoking pipe to the Indians
64.What is the meaning of the underlined word "melancholy"?
A. Sad and lonely.                  B. Dreamy and exciting.
C. Soft and musical.                D. Warm and happy.

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