完形填空

　　In the year 1666 there was a terrible disease in London. Thousands of people died every week. The disease was 1 by fleas(跳蚤), which lived in clothes. When people started to feel 2 , they sneezed(打喷嚏). Then they had a high temperature－and in less than a week they died.

　　The village of Eyam is in the north of England. People there heard of the terrible 3 in London. They were very happy that London was 4 .

　　One day a man arrived from 5 . He brought with him lots of different things 6 . Among these things there was some cloth. On it were the 7 “Made in London”.

　　Two days later, a boy sneezed. He said he had a 8 . Nobody worried much, but soon he was 9 with a high temperature. The next day, the boy 10 died, and another two people 11 to sneeze.

　　At once the village people held a meeting to 12 what to do. An old man said,“If people run away from this village, they 13 carry the disease with them. Then the disease will be carried to other 14 . and thousands of people will die. We must 15 other people outside our village don’t 16 this terrible disease.”

　　The people of Eyam 17 the old man. In this way they 18 the population of the other villages from the terrible disease. 19 , 40% of the population of Eyam died from the disease, The disease itself 20 . The people who were still living were able to visit people outside the village again.

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完形填空（共15小题；每小题2分，满分30分）

阅读下面短文，掌握其大意，然后从下列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。

The human nose is an underestimated tool. Humans are often thought to be  1___ smellers compared with animals, but this is largely because, unlike animals, we stand upright. This means that our noses are  2  to detecting those smells which float through the air,  3  the majority of smells which stick to surfaces. In fact though, we are extremely sensitive to smells, even if we do not generally realize it. Our noses are capable of  4  human smells even when these are  5  to far below one part in one million.

　　  6     , some people find that they can smell one type of flower but not another, while others are sensitive to the smells of both flowers. This may be because some people do not have the genes necessary to generate  7     smell receptors in the nose. These receptors are the cells which sense smells and send  8    to the brain. However, it has been found that even people insensitive to a certain smell at first can suddenly become sensitive to it when  9     to it often enough.

　　The  10   for insensitivity to smell seems to be that brain finds it  11    to keep all smell receptors working all the time but can  12   new receptors if necessary. This may also explain why we are not usually sensitive to our own smells we simply do not need to be. We are not  13     of the usual smell of our own house but we  14     new smells when we visit someone else's. The brain finds it best to keep smell receptors _ 15    for unfamiliar and emergency signals such as the smell of smoke, which might indicate the danger of fire.

完形填空（共15小题；每小题2分，满分30分）

阅读下面短文，掌握其大意，然后从下列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。

The human nose is an underestimated tool. Humans are often thought to be  1___ smellers compared with animals, but this is largely because, unlike animals, we stand upright. This means that our noses are  2  to detecting those smells which float through the air,  3  the majority of smells which stick to surfaces. In fact though, we are extremely sensitive to smells, even if we do not generally realize it. Our noses are capable of  4  human smells even when these are  5  to far below one part in one million.

　　  6     , some people find that they can smell one type of flower but not another, while others are sensitive to the smells of both flowers. This may be because some people do not have the genes necessary to generate  7     smell receptors in the nose. These receptors are the cells which sense smells and send  8    to the brain. However, it has been found that even people insensitive to a certain smell at first can suddenly become sensitive to it when  9     to it often enough.

　　The  10   for insensitivity to smell seems to be that brain finds it  11    to keep all smell receptors working all the time but can  12   new receptors if necessary. This may also explain why we are not usually sensitive to our own smells we simply do not need to be. We are not  13     of the usual smell of our own house but we  14     new smells when we visit someone else's. The brain finds it best to keep smell receptors _ 15    for unfamiliar and emergency signals such as the smell of smoke, which might indicate the danger of fire.