问题
选择题
已知两圆半径分别为7，3，圆心距为4，则这两圆的位置关系为[ ]
A.外离
B.内切
C.相交
D.内含
答案
答案：B
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已知两圆半径分别为7，3，圆心距为4，则这两圆的位置关系为[ ]
A.外离
B.内切
C.相交
D.内含
答案：B
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| Once an Arab was travelling in the desert. When the sun went down in the west, he stopped and 1 his tent, made a fire and had a simple meal. When night fell, he 2 down to sleep. He had already fallen aslep when he felt a soft 3 on his elbow. He woke up to find that his camel had put his head inside the tent. The camel said, “Would you pleas let me 4 my head in the tent to get warm It’s so cold outside. I won’t take up too much 5 . The Arab was a kind-hearted man. “All right, do as you 6 ,” he said. Then he turned on his side and back to sleep. It wasn’t long 7 he felt a push on his shoulder. It was the camel again. "Dear master," the camel said, " my head is quite warm now, but my neck is still cold. Do you mind 8 I keep it inside the tent, too?" "No, not at all,"the man said. But this time he felt a bit 9 , as the camel had such a long neck. No sooner had cloesed his eyes 10 he got a harder push in his side. This time the camel said, "Will you please allow me to bring my front legs inside and warm them up a little?" The Arab 11 over to one side of the tent. He made himself as small as he could. It wasn’t 12 cofortable, and sleep was now out of the question. Soon after that the camel gave him a rough push and said, “The tent is too small for the two of us. 13 , my two back legs are still left in the cold. It is only 14 that you should leave the whole tent to me. And with that, the camel 15 the poor man out. | ||||
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