炎症灶中吸引炎细胞定向集中的现象称为()
A.白细胞游出
B.白细胞吞噬
C.白细胞阿米巴运动
D.阳性趋化性
E.白细胞渗出
参考答案:D
— Would you like to come to my birthday party?
— Yes, ______ I'm very busy. [ ]
A. I like to, and
B. I'm glad to, but
C. I'd like to, but
D. I would like, and
我国第一条高速公路建于________,从_________到_________。