The writer wrote this story about Jordan and his young friends because _______
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Why did Chinese go to America in the mid-1800s?
已知变量age表示年龄,如何设计表达式判断是否12周岁_______
能正确表示“当x的取值在[1,10]或[200,210]范围内为真,否则为假”的表达式是_______
假定变量a=2, b=3, c=1, 则表达式:c==b>a || a+1==b--, a+b 的值是_____