下列哪项不是血液成分制品
A．浓缩红细胞B．冷沉淀C．白蛋白D．血浆代用品E．新鲜冰冻血浆
参考答案：D
You should understand the traffic rule by now. You've had it _____ often enough. [ ]
A. explaining
B. to explain
C. explain
D. explained
最常见的脑瘫的类型有
A．痉挛型B．手足徐动型C．共济失调型D．混合型E．强直型
