閱讀理解
Farmer Ed Rawlings smiles as he looks at his orange trees. The young oranges are growing well in Florida’s weather. Warm sunshine and gentle rains, along with Ed Rawlings’ expert care, will produce a good crop of oranges this year.
But Ed has to fight against Florida’s changeable winter weather. In January and February, temperatures can destroy Ed’s entire orange crop. Having farmed in Florida for the past 35 years, Ed Rawlings is prepared for the frosts. When temperatures drop below freezing, Ed tries to save his crop by watering his orange trees. The water freezes and forms a thin layer of ice on the trees. Strange as it may sound, this thin layer of ice actually keeps the fruit warm.
What happens is simple. When the tree are watered, the water loses heat and becomes ice. The warmth of the heat it loses is sucked in by the fruit and keeps its temperature at a safe level. Ed Rawlings has effectively used this method to save many orange crops.
But Ed still faces some difficulties. The trees should be watered at the exact moment the temperature drops to the freezing point. Also, just the right quantity of water must be used. Too much water can form a thick layer of ice that will break the trees’ branches. Another difficulty is that wind blows away the heat. So Ed has to worry about not only when but also how often his trees should be watered, and how much water should be used.
Computer technology may hely Ed Rawlings with some of these worries. With equipment, air and soil temperatures and wind speed can be measured. The information is fed into a computer which can tell when temperatures drop to freezing. The computer can correctly decide the quantity of water to be used and how frequently the trees should be watered. Ed Rawlings will find looking after his orange trees a lot easier with the help of a computer, and we’ll all have the benefits (or advantages) of computer-age oranges.
1.The passage is mainly about ________.
[ ]
A.a(chǎn) farmer’s expert care for his orange trees
B.the different uses of computers
C.growing oranges in Florida’s changeable weather
D.different ways of frost protection
2.Ed tried to protect his crop by ________.
[ ]
A.using a wind machine to drive away the cold air
B.equipping his orange trees with a computer
C.watering it at the proper time
D.picking his fruit at the first sign of frost
3.In the writer’s eyes, computers ________.
[ ]
A.a(chǎn)re too expensive for small farmers
B.can be a valuable tool for the farmer
C.can be used to help oranges grow bigger
D.cannot take the place of the farmer’s experience and judgement
4.Which of the Mowing is NOT NECESSARY for Ed Rawlings to do?
[ ]
A.He should water the orange trees as soon as the temperature drops to the freezing point.
B.He should decide the quantity of water for the orange trees.
C.He has to water the orange trees more often in January and February.
D.He has to judge how often he should water the orange tree.
5.According to the passage, the computer technology can ________.
[ ]
A.get rid of the need for frost protection
B.help the farmer get a better harvest
C.tell the farmer why outdoor temperature changes
D.prevent the temperature from dropping to the freezing point
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科目:高中英語 來源: 題型:053
閱讀理解:閱讀下列短文, 從所給的四個(gè)選項(xiàng)中, 選出最佳答案。
Animals seem to have the sense to eat when they are hungry and they do not eat more than their bodies need. It has been demonstrated (證實(shí)) that rats will, when given a choice over a period of time, prefer water with vitamins (維生素) to water without vitamins, even though there is no difference in taste or smell between the two water bottles. When a fragrant flavor (香味) was added to the vitamin—enriched liquid, the rats did seem to develop a taste for it and kept drinking it, even after the vitamins were switched (轉(zhuǎn)) to the clear water. In time, however, they broke the habit and went back to where the necessary vitamins were.
In an experiment, babies of 6 to 12 months old were placed in a cafeteria (自助食堂) with a wide selection of baby food before them. They were given whatever food they pointed to or appeared interested in. We are told that at first they showed some unusual eating patterns, but over a period of time they managed to select a well balanced diet (飲食).
So, in selecting food, rats and babies do seem to know and act on what's best for them. Clearly, there is a kind of "body wisdom" which humans soon lose. Most of us do not eat as wisely as we could. Many of our food preferences are culturally determined and influenced (影 響) by long-established habits. Some people eat fox, dog and blackbirds, while we eat cows and pigs. So what people eat and how much they eat seems to be greatly influenced by what is going on around them.
(1)In the experiment on rats, a fragrant flavor was added to the rat's drinking water to ________.
[ ]
A. encourage rats to drink it
B. find out what kind of flavor rats prefer
C. test whether rats know which drink is with fragrant flavor
D. demonstrate that vitamins are tasteless
(2)The expression "the habit" in the first paragraph refers to drinking water which __________.
[ ]
A. has no smell B. is tasteless
C. has vitamins D. is flavored
(3)As far as their eating habits are concerned, babies and rats are similar (相似) because ___________.
[ ]
A. both have the wisdom to choose a balanced diet
B. both prefer flavored food and drink
C. both have the same eating patterns
D. both develop a taste for the same kinds of flavors
(4)In the experiment mentioned in the second paragraph, babies were _________.
A. given many choices of drinks
B. provided with various kinds of baby food
C. placed and fed in a cafeteria
D. trained to select a balanced diet
(5)According to the passage, adults' (成年人) eating habits differ from those of babies because ____________.
[ ]
A. adults know better than babies what kinds of food are good for their health
B. adults usually cannot resist the temptation of various delicious foods
C. adults' eating habits are closely related to the social and cultural customs
D. adults have more choices of food than babies in eating patterns
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科目:高中英語 來源: 題型:053
閱讀理解:
閱讀 下列短文,從所給的四個(gè)選項(xiàng)中,選出最佳答案。
“We're more than half way now: it's only two miles farther to the inn (小客棧),” said the driver.
“I'm glad of that!” answered the stranger. He wanted to say more but the east wind blew right down his throat whenever he tried to speak.
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1. How far was the drive from the train to the inn?
[ ]
A. One mile B. Two miles
C. less than four miles D. A little over four miles
2. The driver was ________.
[ ]
A. an old man B. a stranger
C. a girl D. from the Western Country
3. From the passage we know that the two speakers were facing _______.
[ ]
A. west B. east C. northwest D. south
4. According to the stranger, in the west the winters are ________.
[ ]
A. cold and relatively dry
B. cold and relatively wet
C. wet and relatively warm
D. warm and relatively dry
5. After leaving the stranger at the inn, the driver ________.
[ ]
A. had to return to the railway station
B. was going home
C. was going to see the inn keeper
D. had to leave by train
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