题目内容
—These peaches are really juicy.
—They _ be! Just see the price, $3.99 a pound.Very expensive, aren't they!
A. would B. should C. might D. could
B
阅读下面短文,掌握其大意,然后从41─60各题所给的四个选项(A、B、C和D)中选出最佳选项,并在答题卡上将该项涂黑。
“Father, I don’t like to go to school,” said Harry Williams one morning. “I wish you would let me stay at home. Charles Parker’s father doesn’t make him go to school.”
Mr Williams 36 his little boy by the hand, and said 37 to him, “Come, my son. I want to show you 38 in the garden.”
Harry walked into the garden with his 39 , who led him along until they came to a bed in which peas(豌豆) were growing. Not a weed(杂草) was to be 40 about their roots.
“See how beautifully these peas are 41, my son,” said Mr. Williams. “How clean and healthy the vines(藤) look. We shall have a good 42 . Now let me show you the vines in Mr. Parker’s garden.”
Mr. Williams then 43 Harry to look at Mr. Parker’s pea vines.
After a few moments, Mr. Williams asked, “Well, my son, what do you 44 Mr. Parker’s pea vines?”
“Oh, Father!” replied the little boy. “I never saw such 45 looking peas in my life! The weeds are nearly as 46 as the peas themselves. There won’t be half a crop!”
“ 47 are they so much worse than ours, Harry?”
“Because they have been left to grow as they 48 . I suppose Mr. Parker just planted them, and never took any care of them 49 ”
“ Yes. A garden will soon be overrun with weeds 50 it is not taken good care of,” Mr. Williams 51 , “and so it is with the human garden. Children’s minds are like garden beds. They must be 52 cared for. I send you to school in order that the garden of your 53 may have good seeds(种子) and 54 plentifully. Now which would you 55 , to stay at home or go to school?”
“I would rather go to school,” said Harry.
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Have you ever heard a news reporter talk about DNA? Reporters talk about DNA found at the scene of a crime. They talk about police finding DNA “fingerprints.” Police sometimes use DNA as a clue to find out who committed the crime.
DNA is a substance(物质) that makes up genes. Everything alive has genes. Plans have genes. Animals have genes. You have genes.
Genes are the basic units of heredity(遗传). Heredity means all the characteristics you inherit from your parents. You get your genes from your parents. You inherit half of your genes from your mother. You inherit half of your genes from your father.
Genes are a kind of code. A tree’s genes tell what shape its leaves will be. A cat’s genes tell what color its fur will be. Your genes tell what color your eyes will be. Your genes tell what color your hair will be. Everything about you comes from the code in your genes.
Genes line up on strands(链) called chromosomes(染色体) in cells. Everything alive is made up of cells. Chromosomes are in the center, or nucleus, of cells.
Different parts of you are made of different kinds of cells. Your muscles are made of muscle celIs. Your skin is made of skin cells. The code in your genes tells your body to make different kinds of cells. The genes in each cell tell the cell how to work. They tell the cell when to make new copies of itself.
An Austrian monk named Gregor Mendel first saw inherited patterns in pea plants. He experimented with pea plants in the 1860s. One of the things, or traits(特质), Mendel studied was what makes some pea plants tall and some short. He said that the traits must come from units of heredity passed from the parent plants. These units were later called genes.
In the mid-1900s, scientists discovered that genes are made of DNA. In the 1970s, scientists learned how to change DNA with genetic engineering. Scientists also learned that problems with certain genes cause diseases. Muscular dystrophy, cystic fibrosis, and hemophilia are some genetic diseases-diseases caused by problems in genes. Today, scientists are looking for ways to cure genetic diseases by changing genes through a process called gene therapy.
【小题1】 What is DNA?
A.DNA is a kind of gene. |
B.DNA is a substance that makes up genes. |
C.DNA is the basic unit of heredity. |
D.DNA is a measure to protect crime. |
A.Plants, animals and human beings have the same genes. |
B.Half people inherit all genes from their mother, others from their father. |
C.Genes decide the trees shapes, the cats’ fur color and our eyes’ color as well. |
D.Genes will give you a code when you need them. |
A.Genes lining up on strands called chromosomes are in the center of cells. |
B.Genes hide in everything alive in your body. |
C.Genes can be nowhere but in your mind, controlling all your actions. |
D.Genes travel in your body and help cope skin, muscle, and eyes. |
A.first saw inherited patterns in people |
B.was interested in why plants were different |
C.first called the units of heredity from parents genes |
D.was the first who discovered genes |
A.scientists were less intelligent than monks in 1900s |
B.some genes are bad and can cause diseases |
C.we don’t need to worry about genetic diseases any longer |
D.the discovery of genes may be of great help in our daily life |
Almost all cultures celebrate the end of one year and the beginning of another in some way. Different cultures celebrate the beginning of a new year in different ways, and at different times on the calendar.
In Western countries, people usually celebrate New Year at midnight on January 1st. People may go to parties, dress in formal clothes -- like tuxedos (小礼服) and evening gowns, and drink champagne at midnight. During the first minutes of the New Year, people cheer and wish each other happiness for the year ahead. But some cultures prefer to celebrate the New Year by waking up early to watch the sun rise. They welcome the New Year with the first light of the sunrise.
It is also a common Western custom to make a New Year’s promise, called a resolution. New Year’s resolutions usually include promises to try something new or change a bad habit in the new year.
Many cultures also do special things to get rid of bad luck at the beginning of a new year. For example, in Ecuador, families make a big doll from old clothes. The doll is filled with old newspapers and firecrackers. At midnight, these dolls are burned to show the bad things from the past year are gone and the new year can start afresh (again). Other common traditions to keep away bad luck in a new year include throwing things into rivers or the ocean, or saying special things on the first day of the new year.
Other New Year traditions are followed to bring good luck is to eat grapes on New Year’s Day. The more grapes a person eats, the more good luck the person will have in the year. In France, people eat pancakes for good luck at New Year. In the United States, some people eat black-eyed peas (豇豆) for good luck -- but to get good luck for a whole year you have to eat 365 of them!
【小题1】Which culture celebrates New Year in the morning?
A.The United States. | B.Spain. |
C.France. | D.The passage doesn’t say. |
A.Something you burn. | B.Something you eat. |
C.Something you say. | D.Something you wear. |
A.Bringing good luck. | B.Keeping away bad luck. |
C.Planning for the next year. | D.Remembering the past. |
A.Black-eyed peas taste bad. |
B.One pea brings one day of luck. |
C.The peas are very difficult to cook. |
D.It is bad luck to eat a lot of black-eyed peas. |