— Brian does well in math, ?
— . He always gets good scores in his math exams.
A:does he; Yes,he does
B:doesn't he; Yes,he does
C:does he; No,he doesn't
D:doesn't he; No,he doesn't
已知实数a、b在数轴上对应的点如图所示,则下列式子正确的是( )
下列关于生物性状的表述,错误的是( )