库肯勃瘤是
A.良性卵巢肿瘤
B.原发于胃肠道的卵巢转移性肿瘤
C.囊性肿瘤
D.子宫肿瘤
E.卵巢恶性肿瘤
参考答案:B
— Do you know _____?
— I'm not sure. Maybe he is a businessman.
[ ]
A. who he is
B. what he does
C. where he lives