— __________! I have a meeting to attend that day. Thank you all the same.
A:What a pity
B:Good luck
C:Never do it again
D:Well done
如图所示,将质量为2kg的正方形物块,放入盛有水的水槽内,待物块静止时,其下表面距水面6cm,求:
根据句子意思, 首字母和汉语注释, 写出适当单词。