联想电脑借助IBM电脑的技术优势发展业务采用的是错位性商业模式。
参考答案:对
It was ten years ago ______ that republic was _______. [ ]
A. when; set up
B. that; came into being
C. when; founded
D. that founded
在一个不透明的布袋中装有2个白球和n个黄球,它们除颜色不同外,其余均相同.若从中随机摸出一个球,摸到黄球的概率是,则n=().