题目

甲、乙两烧杯中各盛有100 mL 3 mol·L－1的盐酸和NaOH溶液，向两烧杯中分别加入等质量的铝粉，反应结束后，测得生成的气体体积比为甲∶乙＝1∶2，则加入铝粉质量为                    ( ) A．5.4 g                         B．3.6 g C．2.7 g                         D．1.8 g 答案：AToday Mary's parents aren't at home，so she wants to ______ us for dinner.A. join B. make C. think D. know