题目内容
1编写一个计算减法的方法，当第一个数小于第二个数时，抛出“被减数不能大于减数"的异常.
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Read Text D and finish the following exercises.1) __________ signaled the end of an era and the faint hope that one day the Beatles might get together again had gone forever.2) George Harrison, John Lennon, Paul McCartney, and Ringo Starr formed the Beatles in ________ in 1960. a. Hamburg b. New York c. Liverpool3) At first, the themes of the Beatles were precisely those that occupied and concerned their young audience; later, they reflected the climate of the 1960s and sang of social ________ and political ________.
多角化增长战略有哪些特点？
以下哪些属于宏观环境？
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