One of the men held the view ____ the book said was right. [ ]

A. that what

B. what that

C. that

D. whether

实验室欲用碳酸钠固体配制500mL、0.10mol·L^-1的Na₂CO₃溶液，下列叙述正确的是

A．实验用到的仪器有：托盘天平、烧杯、500mL容量瓶、玻璃棒

B．将称量好的固体放入500mL容量瓶中溶解

C．定容时若俯视刻度，则所得溶液浓度偏高

D．定容后翻转摇匀，发现液面下降，又加入蒸馏水到刻度线