First impressions are the most lasting. After all, you never get _____ second chance to

make _____ first impression.

[      ]

A. a; a

B. a; the

C. the; the

D. the; a

国际TNM分期法中的M是指()。

A．原发肿瘤

B．肿瘤部位

C．远处转移

D．区域淋巴结

E．肿瘤的恶性程度