-Who took away the book?
-Tom ___________.[ ]
A. Will
B. took
C. did
D. does
答案:C
疟原虫感染人体后进入肝细胞繁殖成熟后进入()
A.CD4+细胞
B.CD8+细胞
C.白细胞
D.淋巴细胞
E.红细胞
肺癌引起支气管阻塞的特征有:()
A.肺段或肺叶局限性肺气肿
B.局限性哮鸣音
C.阻塞性肺炎
D.肺段或肺叶不张
E.胸腔大量积液