题干
—It's not difficult for five workers to push the broken van away.
— Yes, __________.
A：Many hands make light work
B：When the cat's away, the mice will play
C：Every dog has its day
D：Don't put all your eggs in one basket
答案(点此获取答案解析）
A
中1 mol H－O键形成时放出热量463 kJ，则氢气