—Yes, it's quite ______ excellent play, so I can't wait to turn on the TV when I get home.
A:a;the
B:the; an
C:a; an
D:the; the
某中学八年级同学为准备一节“探究与实践”课收集整理了如下资料:“撤出瑞金”、“四渡赤水”、“强渡大渡河”、“翻越大雪山”,据此判断他们探究的主题是( )
下面字音完全正确的一组是( )。
下面对氧气性质的描述中,错误的是( )