题目内容

The length of a letter does not depend on the subject of the letter.()

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在复变函数中,负数也有对数。这一点和实变函数中不同,而且正实数的对数在复变函数中也是无穷多值的。()

The use of the passive voice cannot soften a request.()

The courtesy title Miss is used for a married woman.()

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