题干
—How many people were invited to the meeting?
—About six ________.
A：hundred
B：hundreds
C：hundred of
D：hundreds of
答案(点此获取答案解析）
A
—How many people were invited to the meeting?
—About six ________.
A：hundred
B：hundreds
C：hundred of
D：hundreds of
2CO（g）△H>0。该反应达到平衡后，下列条件有利于反应向正方向进行的是（ ）