男,30岁,近2个月来发热、咳嗽、血痰、消瘦,X线示:肺有炎症浸润及空洞性病变,最可能的诊断是
A.肺癌
B.肺脓肿
C.肺结核
D.肺囊肿合并感染
E.肺大疱合并感染
参考答案:C
There are many apples ________ the tree. [ ]
A. in
B. on
C. under
D. of
马铃薯的脱毒原理。