现代类人猿和人类的共同祖先是( )
A:黑猩猩
B:长臂猿
C:猕猴
D:森林古猿
甲、乙、丙三种固体物质的溶解度曲线如图所示,下列说法正确的是( )
某22肽被水解成1个4肽,2个3肽,2个6肽,则这些短肽的氨基总数的最小值及肽键总数依次是()
First-class players of football must have excellent ball control, but it is not just _____ they do with their feet _____ counts.