Many Chinese like watching People Who Moved China, which honors those _____ contributions should be remembered and learned from.

A．whose

B．who

C．that

D．Their

测定水中的磷酸盐可选用（）分光光度法。

A、纳氏试剂

B、钼锑抗

C、α－萘胺

D、二苯碳酰二肼