题目内容

Vitamin C helps our bodies make a special chemical, which _______ affects our brains, making us feel happy.

A.
in all
B.
in turn
C.
in advance
D.
in short

B
词组辨析。In all 总计 in turn 轮流，反作用于 in advance 提前 in short 总之
句意为维他命C可以帮助我们的身体制造出一种特殊的化学物质，反过来可以影响我们的大脑，让我们感到开心。

练习册系列答案

相关题目

People often fall ill because of me. 36 , they can hardly blame me; it is largely their own 37 .A tired person may get 38 , especially when he goes to crowded places with polluted air. A sudden change in 39 is another factor. In hot summer, people turn on the air-conditioner upon returning home. They will catch a cold easily.

My latest victim is an energetic student. After school, he played football hard for two hours. Though 40 , he still went to the cinema .Then he got back home and took a cold shower immediately.

I seized this golden chance to 41 him .He reacted ,trying to 42 me , but I was already 43 deep in his throat. He kept sneezing（打喷嚏） and his nose was running. 44 he put on some warm clothes, it didn’t work, for there were too many of us. Besides, his sore throat kept 45 him, and he developed a cough to force me and my family out, but 46 .

The next day he couldn’t go to 47 . He had lost his appetite and was not as 48 as before. His mother made him orange juice every few hours for more vitamin C, which would help his 49

For two days he was 50 by his mother. As he rested more, his defense strengthened and I began to feel the 51 . I knew I had to 52 him before long. But I am not the one who gives up easily, and I made every effort to fight back. 53 , it was my turn to feel 54 now, for his defense system was starting an all-out attack against me. I became 55 and finally my time was over.

Do you know what I am?

36. A. Therefore B. Besides C. However D. Then

37. A .business B . responsibility C. excuse D. fault

38. A. punished B. blamed C. caught D. killed

39. A. temperature B. season C. place D. condition

40. A. excited B. hurt C. late D. tired

41. A. injure B. bother C. attack D. destroy

42. A. get on with B. get rid of C. put up with D .take hold of

43. A. reproducing B. waiting C. hiding D. disappearing

44. A. Since B. Once C. Whether D. Although

45. A. reminding B. upsetting C. comforting D. influencing

46. A. escaped B. succeeded C. regretted D. failed

47. A. bed B. work C. school D. hospital

48. A. peaceful B. afraid C. active D. happy

49. A. recovery B. development C. study D. affected

50. A. protected B. nursed C. scolded D. affected

51. A. loss B. operation C. pressure D. movement

52. A. leave B. catch C. forget D. beat

53. A. Uncertainly B. Unsuccessfully C. Unusually D. Unfortunately

54. A. painful B. disappointed C. nervous D. ashamed

55. A. bigger B. weaker C. smaller D. stronger

C
　Being considered a leader in our society is indeed of high praise. Leadership means power, commands, respect and, most important, encourages achievement. Unlike vitamin C, leadership skills can’t be easily swallowed down. They must be carefully cultivated.
　Different from popular belief, most good leaders are made, not born. They learn their skills in their everyday lives. But which do they develop？How do they (and how can you) get others to follow?
　Always give credit. Many leaders note that the most efficient way to get a good performance from others is to treat them like heroes. Giving public credit to someone who has earned it is the best leadership technique in the world. It is also an act of generosity (慷慨) that’s never forgotten.
　Giving credit is more effective than even the most constructive criticism (批评), which often hurts rather than helps. Kenneth Blanchard, the author of The One-Minute Manager, agrees. “Catch people doing something right!” he says. Then tell everyone about it.
　Take informed risks. “The best leaders know that taking a risk is not a thoughtless exercise,” says management adviser Marilyn Machlowitz. “Sky divers don’t go up in an airplane without checking the parachutes (降落伞) beforehand.”
　Because the idea of risk also carries with it the possibility of failure, many of us usually wait for others to take charge. But if you want to be a leader, you must learn to fail and not die a thousand deaths. Pick yourself up and start all over again.
　Encourage enthusiasm (热情). “When people understand the important of work, they lend their mental strengths,” says Lee Ducat. But when they get excited about the work, all their energy gets poured into the job. That’s a great force! Is this the best way to create excitement? Be enthusiastic yourself. You will be followed by everyone.
64．The underlined word “cultivated” (in paragraph1) roughly means ________.
A．encouraged　　　　B．compared　　 C．examined　　　　D．developed
65．The part “always give credit” tells us that a leader should _______.
A．give helpful criticism　　　　　　　     B．regard others as real heroes
C．praise people for their good performances　 D．praise everyone
66．To be a good leader, you should _______.
A．not be afraid of any risks　　　　　　     B．think twice before taking risks
C．try to avoid any possible failures　　　　    D．know what a thoughtless exercise is
67．Which of the following can be the best title for the passage?
A．Leadership is of skills and techniques　　     B．Leadership is very important
C．Not many can be leaders　　　　　　     D．How to be a leader

This kind of fruit ________ large amounts of vitamin, vitamin C.

A. includes; including B. takes; containing

C. holds; included D. contains; including

More than 10 years ago, it was difficult to buy a tasty pineapple. The fruits that made it to the UK were green on the outside and, more often than not, hard with an unpleasant taste within. Then in 1996, the Del Monte Gold pineapple produced in Hawaii first hit our shelves.

The new type of pineapple looked more yellowy-gold than green. It was slightly softer on the outside and had a lot of juice inside. But the most important thing about this new type of pineapple was that it was twice as sweet as the hit-and-miss pineapples we had known. In no time, the Del Monte Gold took the market by storm, rapidly becoming the world’s best-selling pineapple variety, and delivering natural levels of sweetness in the mouth, up until then only found in tinned pineapple.

In nutrition(营养) it was all good news too. This nice-tasting pineapple contained four times more vitamin C(维生素C) than the old green variety. Nutritionists said that it was not only full of vitamins, but also good against some diseases. People were understandably eager to be able to buy this wonderful fruit. The new type of pineapple was selling fast, and the Del Monte Gold pineapple rapidly became a fixture in the shopping basket of the healthy eater.

Seeing the growing market for its winning pineapple, Del Monte tried to keep the market to itself. But other fruit companies developed similar pineapples. Del Monte turned to law for help, but failed. Those companies argued successfully that Del Monte’s attempts to keep the golden pineapple for itself were just a way to knock them out of the market.

1.We learn from the text that the new type of pineapple is ______.

A．green outside and sweet inside	B．good-looking outside and soft inside
C．yellowy-gold outside and hard inside	D．a little soft outside and sweet inside

2.Why was the new type of pineapple selling well?

A．It was rich in nutrition and tasted nice.	B．It was less sweet and good for health.
C．It was developed by Del Monte.	D．It was used as medicine.

3.The underlined word “fixture” in Paragraph 3 probably refers to something ______.

A. that people enjoy eating B. that is always present

CV. that is difficult to get D. that people use as a gift

4.We learn from the last paragraph that Del Monte ______.

A．allowed other companies to develop pineapples

B．succeeded in keeping the pineapple for itself

C．tried hard to control the pineapple market

D．planned to help the other companies

Anyone for rocket salad? The Chinese are now growing huge vegetables from seeds they sent into space.

If you’re the type who worries about the air miles traveled by fruits and vegetables, these beauties aren’t for you. It’s because they have traveled a little further than most.

The seeds from which they grew were fired into space, where they orbited the earth for two weeks. Once they returned they were grown in hothouses, producing the monster kinds seen here.

China, which is behind these space fruits and vegetables, says they could be the answer to the world’s food crisis.

The 21-pound tomatoes, nine-inch chilies, 15-stone pumpkins and large watermelons growing at the Guangdong Academy of Agricultural Sciences’ hothouses can feed many more than their smaller cousins, and may have more nutrients, the scientists say.

Researcher Lo Zhigang said, “Traditional agricultural development has taken us as far as we can go and demand for food from a growing population is endless. Space seeds offer the opportunity to grow fruits and vegetables bigger and faster.”

He admitted he and his colleagues could not explain why time in orbit caused the seeds to change genetic structure. But they guessed exposure to the cosmic(宇宙的) radiation that attacked the spacecraft in orbit, as well as the near zero gravity conditions, microgravity, could play a part.

“We don’t think there’s any threat to human health because the genes themselves do not change; just their order changes,” he said. “With genetically-modified(GM) crops you have seen environmental problems because they have added genes that can damage other organisms. But with space seeds they don’t gain genes; they can only lose them.”

He also claimed the Vitamin C content in some space vegetables was nearly three times higher than in common vegetables, while levels of zinc are also increased.

Western scientists are doubtful. NASA researchers who have experimented with seeds in space say there is not enough benefit to show the cost is reasonable.

72. What do the underlined words “these beauties” in paragraph 2 probably refer to?

A. Beautiful views along the air routes. B. Traveling experiences in space.

C. Seeds fired into space. D. Giant vegetables.

73. We can infer from Lo’s words in paragraph 6 that .

A. our conventional agriculture has developed too slowly

B. we are asking too much from nature

C. space seeds may help meet our demand for food

D. we’ll grow crops in space in the future

74. Why the seeds changed their genetic structure .

A. remains to be proved

B. is discovered by Lo Zhigang

C. has something to do with die conditions in hothouses

D. is due to the radiation that attacked them directly

75. Comparing Gm crops and space crops, we can see that .

A. space crops grow faster

B. space crops are more environmentally friendly

C. GM crops are less a threat to human health

D. GM crops have fewer nutrients

Vitamin C helps our bodies make a special chemical, which _______ affects our brains, making us feel happy.

试题分类