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做作业要认认真真,做学问也要一丝不苟,来不得半点马虎,错一个字母看似小,可演算成的答案却会差之千里……
Doing homework should be conscientious, and learning must be meticulous, not to sloppy slightest slightest mistake, a letter may seem small, but the calculus into the answer will be miles away ...