题目

       根据Na、S单质及其化合物的类别，完成下列标号的化学方程式。 上述有关反应的化学方程式为 ①________________________________________________________________________； ②________________________________________________________________________； ③________________________________________________________________________； ④________________________________________________________________________； ⑤________________________________________________________________________； ⑥_______________________________________________________________— _____________ is your hobby?— I like playing football. [     ]A. WhatB. How