— _______. I have a lot of homework to do.
A:Excuse me
B: I'd like to
C:I'm afraid not
D:It's a pleasure
西藏是我国领土神圣不可分割的一部分,在元朝设置______管理西藏。( )
— _______ exciting news!
下图是甲状腺活动的调节示意图。对该图的理解,不正确的是( )