They walked home last night because they couldn't to take a taxi.
A:leave
B:buy
C:afford
D:allow
火+丁=____ ____
口+向=____ ____
石+角=____ ____
门+木=____ ____
日+京=____ ____
目+乏=____ ____
如图所示,三只相同的杯子中分别装有质量相等的水、煤油和盐水(ρ盐水>ρ水>ρ煤油),则下列判断正确的是()