— Excuse me, sir, could you tell me how to go to the City Hall? — Sorry, I’m a new comer. You have to ask, I’m afraid, ______ is a native. A. someone B. whoever C. who D. whomever 答案:B从装有除颜色外完全相同的2个红球和2个白球的口袋内任取2个球,则对立的两个事件是( )
A、至少有1个白球,都是白球B、至少有1个白球,至少有1个红球C、恰有1个白球,恰有2个白球D、至少有1个白球,都是红球