“水由氢和氧化合而成”;“三角形与直角三角形的关系”。对此认识正确的是
Would you please keep silent? The news that the milk contains a harmful chemical __________ and I want to listen.
les __________ before the guests arrive.
The __________ look on his face showed that he had enough confidence in himself.
From his __________ expression (表情), we know the meeting is __________.
__________ and short of breath, Andy and Ruby were the first to reach the top of Mount Tai.