对放疗不敏感的恶性肿瘤为
A.恶性黑色素瘤 B. * * 状瘤 C.鳞状细胞癌 D.恶性淋巴瘤 E.牙龈瘤
参考答案:A
根据基金运作方式,基金可以分为( )。
A.封闭式基金
B.开放式基金
C.交易型开放式指数基金
D.上市开放式基金
John promised his doctor he()not smoke,and he has not smoked ever since.
A. might
B. should
C. could
D. would