题目

为了保证结果准确，一般选择菌落数在_______的平板进行计数（ ） A.30～100              B.30～200 C.30～300              D.30～600   答案：C   听下列对话回答问题 M：Mum, I'm watching today's football game on Tape．If you happen to know the score, please don't tell me． W：Ok．That's your game to like it． What do we know about mother and son? [　　] A．She wants to tell him the result of the game． B．She doesn't like him to watch TV． C．She knows which team he supports．