题目内容

Unfortunately, laborers are all too commonplace, and only a small percentage of the population is in the lucky position of being workers.

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He was a tall man, bent from long years of work. What little hair he had was gray; his face was deeply lined. His personality was clear, but never stern. And, I remember best his fine dark eyes, alive with his charitable, carefree, and humorous spirit.

He'd periodically pause his work to referee arguments or give out candy. He had no patience for bullying and would insist the children play fair in front of his store.

If you have inherited a prideful tradition, you must carry it on; if you haven't, then start building one now.

用定积分表示已知截面面积的立体体积时，被积函数一定是圆面的面积表达式。

A. 对
B. 错