嘧啶类属于（）。
A．抗有丝分裂的药物
B．作用于聚合状态微管的药物
C．干扰DNA合成的药物
D．氮芥类药物
E．抗肿瘤抗生素
参考答案：C
Most of the boys in our class _____ playing football; only a _____ likes playing basketball.[ ]
A. like; majority
B. likes; majority
C. like; minority
D. likes; minority
压强的量纲为( )。
A．(A) [ML1T2]
B．(B) [ML-1T-2]
C．(C) [ML-2T-1]
D．(D) [ML2T-1]
