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设曲线y=1-x2（0＜x＜1）与z轴和Y轴所围面积被y=ax2（x＞0）分成面积相等的两部分，则a的数值为（）。
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∫xe-xdx=（）。
C Miggi grows the best vegetables in the village. He grows fruits too-big, sweet apples and oranges. And what else Well, the biggest and the prettiest flowers. Things grow in Miggi’s garden all through the year. He cuts some flowers for his sitting room table; and of course, he eats some fruits and vegetables. But he sells everything else in the market, Miggi is not a poor man. He knows a few other gardeners; but he does not have any friends. You might ask, "What is that Why doesn’t he have friend" I will tell you. People do not understand him. And they do not understand his garden. "Why not" you will ask. "It’s a very good garden, isn’t it" It is a wonderful garden. Miggi plants things in spring, summer, autumn and winter. After that he does very little work. He sits in the garden with his small radio. And eve rything grows. People ask, "How does Miggi grow these wonderful things He waters the plants some- times, but he doesn’t do anything else. He just sits under an orange tree with his radio. He listens to music nearly all day!" and that is all quite true. People cannot understand it, and so they don’t like it very much. Miggi likes music. But what about the garden Who does the work I will tell you an- other true thing: the music does the work. All plants love music; and Miggi knows that. Do you want big vegetables and the loveliest flowers Well, just give your plants a lot of music. People don’t like Miggi because（）
C Miggi grows the best vegetables in the village. He grows fruits too-big, sweet apples and oranges. And what else Well, the biggest and the prettiest flowers. Things grow in Miggi’s garden all through the year. He cuts some flowers for his sitting room table; and of course, he eats some fruits and vegetables. But he sells everything else in the market, Miggi is not a poor man. He knows a few other gardeners; but he does not have any friends. You might ask, "What is that Why doesn’t he have friend" I will tell you. People do not understand him. And they do not understand his garden. "Why not" you will ask. "It’s a very good garden, isn’t it" It is a wonderful garden. Miggi plants things in spring, summer, autumn and winter. After that he does very little work. He sits in the garden with his small radio. And eve rything grows. People ask, "How does Miggi grow these wonderful things He waters the plants some- times, but he doesn’t do anything else. He just sits under an orange tree with his radio. He listens to music nearly all day!" and that is all quite true. People cannot understand it, and so they don’t like it very much. Miggi likes music. But what about the garden Who does the work I will tell you an- other true thing: the music does the work. All plants love music; and Miggi knows that. Do you want big vegetables and the loveliest flowers Well, just give your plants a lot of music. People think that（）.
D A poor traveler stopped under the tree to eat the boiled rice and vegetables which he brought with him. A few meters away, there was a small shop by the side of the road where a woman was frying fish and selling it to travelers. The woman watched the poor traveler carefully, and when he finished his food and began to go, she shouted rudely, "You have not paid me for the fried fish "But I have not had any fried fish!" he said. "But everyone can see that you enjoyed the smell of my fried fish with your rice and veg- etables," said the woman, "If you had not smelled the fish, your meal would not have been so pleasant !" Soon a crowd collected, and although they supported the poor traveler, they had to ad- mit that wind was blowing from the shop to the place where he had eaten, and that it had carried the smell of the fried fish to him. Finally, the woman took the poor traveler to a judge, who said, "The woman says that the traveler ate his meal with the smell of her fried fish. The traveler agrees that the wind was blowing the smell of her fried fish to his nose while he was eating, so he must pay for it." "What does your fried fish cost" he asked the woman. "Twenty-five cents a plate," she answered delighted. "Then go outside together," said the judge. "There the traveler must hold up a twenty five-cent piece so that a shadow(影子) falls on the woman’s hand. The price of the smell of a plate of fried fish is the shadow of twenty-five cents." What is the best title for the passage（）
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