广告规则即广告法规。
参考答案:错
如图,用红磷燃烧来测定空气中氧气的含量,假设本实验中的红磷换成镁条,将会导致实验结果 ______ ,原因是:_________________________________________ .
The room ____ voices of the children.
A.filled with
B.was filled with
C.full of
D.was full with