半卵圆中心为（）
A.皮层下纤维
B.皮层下灰质
C.投射纤维
D.联合纤维
E.弓形纤维
参考答案：A
解析：半卵圆中心为皮层下纤维。
It's very kind _____ you to help me carry the boxes since it is difficult ______ a person like you to
carry so heavy things. [ ]
A. of, of
B. of, for
C. for, of
D. for, for
不恰当使用6-氨基己酸为什么可促进DIC形成?
