参与淋巴细胞归巢的粘附分子不包括()
A.L-selection
B.CD28
C.CD44
D.VLA-4
E.CLA
参考答案:B
下列几组数:①9,12,15;②8,15,17;③7,24,25;④3a,4a,5a(a为大于1的自然数).其中是勾股数的有( )
A.1组
B.2组
C.3组
D.4组
That young Swedish_____quite still, except that his lips moved slightly.
A.kept
B.grew
C.got
D.stood