(12-13)×12,
=12×12-13×12,
=6-4,
=2.
故答案为:2.
— We are going to Yandang Mountains tomorrow.
— _____________.
[ ]
A. It doesn't matter
B. Sorry to hear that
C. You're welcome
D. Have a great time
患者男性,60岁,因"声音嘶哑半月余半咽痛"就诊。查体发现颈部可及2cm×4cm大小肿大淋巴结,颈部MRI提示①右侧梨状窝新生物,侵及右侧声带,环状软骨部分受侵;②双侧颈部多个肿大淋巴结,最大径<6cm
下一步治疗方案选择,你认为不合理的是().
A.手术+术后放疗
B.术前放疗+手术
C.术前同步放疗+手术
D.术前诱导化疗+手术+术后放疗
E.单纯化疗