题干
—Are you familiar _______ the movie, Melissa?
—Yes, I've watched it twice.
A：for
B：with
C：of
D：at
答案(点此获取答案解析）
B
—Are you familiar _______ the movie, Melissa?
—Yes, I've watched it twice.
A：for
B：with
C：of
D：at
4NO＋6H2O在5L的密闭容器中进行，半分钟后，NO的物质的量增加了0.3mol，则下列反应速率正确的是
