—Mom, _____I watch TV?     

—Yes, you can. But you have to finish the homework first.     [ ]

A. must

B. could

C. will

D. need

狭窄性腱鞘炎时最有效的治疗方法是

A．手术

B．局部注射类固醇

C．离子导入

D．夹板

E．电刺激