并殖吸虫病的胸部X线检查可发现（）
A.肺囊肿改变
B.肺尖浸润性病灶
C.胸腔积液
D.肺部脓肿改变
E.胸膜增厚或粘连
参考答案：A, C, D, E
I saw a boy _____ basketball there when I walked past this morning. [ ]
A. play
B. played
C. playing
D. to play
卵巢门细胞
