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Write a program to read in a whole number and test if it is a prime.
写一程序：读入一整数并检验它是否是质数。
youdao
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Pass English band 6 test, and can read and write in English well.
通过英语六级测试，有很好的读写能力。
youdao
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Pass English band 6 test, and can read and write in English well.
通过英语六级测试，有很好的读写能力。
youdao