科目: 來(lái)源:模擬題 題型:閱讀理解
閱讀下列短文,根據(jù)所讀內(nèi)容在表格中的空白處填入恰當(dāng)?shù)膯卧~。 注意:表格中每個(gè)空格只填一個(gè)單詞。 | ||||||||||||
Having entered a hoarding school, Ada and her twin sister Rita determined to strike out independently. Although the sisters had requested rooms in different dorms, they were placed in the same, Ada on the eighth floor and Rita one floor higher. While Ada lived in harmony with her roommate, Rita was unhappy. She and her roommate had a quarrel over matters like the smallest thing-the time of lights being turned off-and the biggest thing-the arrangement of the furniture. Finally, they communicated primarily through short notes rather than by speaking. Rita kept running down along the stairs to ask Ada for help. Before long, the two wanted to live together again. Rita's roommate finally had to move out. Rita's ability to solve her problem by rooming with her twin is unusual, but the conflict she faced is not. Despite great efforts by many schools to make good roommate matches, unpleasant outcomes are common. Most conflicts between roommates develop from small, annoying differences. In extreme cases, the conflicts can lead to serious violence and affect roommates' psychological (心理的) health. Learning to tolerate a stranger's habits may teach students the art of compromise, hut the learning process is often painful. Many schools have started conflict solution programs to calm tensions that could build up like a volcano preparing to explode, resulting in physical violence. Some schools try to prevent conflicts by using computerized matching. Students are put together on the basis of their answers to housing form questions about preferred hours of study and sleep, and self-described tendencies toward tidiness or disorder. Parents sometimes weaken the process by taking the forms and filling in false data about their children's habits. If only conflicts between roommates could disappear! | ||||||||||||
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科目: 來(lái)源:期末題 題型:閱讀理解
閱讀理解。 | ||
As bananas ripen, the green skin turns yellow gradually. Chemical changes occur in the flesh of the fruit as well: starch (淀粉) changes to sugar; pectin (果膠) breaks down, losing its stiffness; and the flesh softens. Is ripening fruit a self-contained system, or is the rate of these changes affected by the environment? We designed the experiment below to see if different atmospheres, produced by different packaging, affected the rate of ripening. You will vary the atmosphere surrounding unripe bananas and observe the effect on the ripening process.
oxygen and gives off CO2. Oxygen is extremely important and necessary for the chemical reactions involved in ripening. In addition, ripening fruit gives off another gas, called ethylene (乙烯). Not only is ethylene a product of ripening fruit, it also promotes the further ripening of the fruit. Paper bags tend to keep the ethylene in, but they allow oxygen and ethylene to pass through slowly. Plastic bags do not allow the free flow of oxygen or ethylene. In this experiment, the green banana in paper bag with the ripe banana should ripen most quickly. The green bananas in the paper bag should ripen faster than the bananas in the plastic bag. The banana left exposed to air has an unlimited supply of oxygen, so it will turn brown most quickly. You will notice that the side of this banana that rests on the counter will ripen more quickly than the other sides, because it has the closest contact (接觸) with its own ethylene. The banana that is tightly wrapped in plastic has no oxygen supply and should ripen most slowly. Now can you see why bananas are sealed in plastic in many supermarkets? | ||
1. What makes the green banana in Bag 2 ripen more quickly than the ones in Bag 1? | ||
A. Ethylene from the very ripe banana. B. The free flow of oxygen or ethylene. C. CO2 from the very ripe banana. D. The limitation of oxygen supply. | ||
2. How can we slow down the ripening of bananas exposed to the air? | ||
A. To rest them on the counter. B. To keep them in the basket. C. To put them on the ground. D. To hang them up from the ceiling. | ||
3. It can be concluded from the passage that _____. | ||
A the ripening banana is a self-contained system B. the rate of ripening bananas is affected by the environment C. wrapped bananas experience no chemical changes to ripen D. ripening bananas give off oxygen, CO2 and ethylene | ||
4. Why are bananas sealed in plastic in many supermarkets? | ||
A. To make them ripen more quickly. B. To make them ripen more slowly. C. To make banana flesh soften. D. To turn green bananas yellow. |
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科目: 來(lái)源:模擬題 題型:閱讀理解
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科目: 來(lái)源:模擬題 題型:閱讀理解
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科目: 來(lái)源:模擬題 題型:閱讀理解
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科目: 來(lái)源:模擬題 題型:閱讀理解
信息匹配。請(qǐng)閱讀下列應(yīng)用文及相關(guān)信息,并按照要求匹配信息。首先請(qǐng)閱讀以下植物的介紹: | ||||||||||||
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請(qǐng)閱讀以下購(gòu)買(mǎi)者的信息,然后匹配購(gòu)買(mǎi)者與所需要的植物。 ( )1. Bill has a garden with many trees providing lots of shade for his family. The soil is wet but poor so Bill has found it difficult to get plants to grow there. ( )2. Spyros has a small, sunny back garden. The soil is very dry and is also of very poor quality. He wants a plant that will brighten his garden in spring. ( )3. Tran has just moved into a new flat which has a small balcony and wants to grow some flowers to add colour. But the balcony gets little sunshine or direct rain and is quite cool. ( )4. Maria has a small back garden with little sunlight. It still gets plenty of rain and the soil is very rich. He would like a plant that will be able to provide him with colour throughout the year. ( )5. Ray/has a back garden which is open, giving it lots of sunshine but unfortunately the soil is of poor quality. He wants some plants that will provide colour during the dry summer time. |
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