题目

下列化肥：①(NH4)2SO4 ②氨水 ③过磷酸钙 ④K2CO3 ⑤KCl ⑥尿素，其中能混合使用的是（） A . ①④⑤ B . ③⑤⑥ C . ②③⑤ D . ③④⑥ 答案：BFill in the blanks with the given words in their proper forms（用所给单词的适当形式填空，每空格限填一词） The plan ______ (talk) over now doesn’t interest me.