计算:-7-4的结果是______.
原式=-7+(-4)=-11.
从腭小孔穿出的神经()
A.鼻腭神经
B.腭前神经
C.腭中神经
D.腭后神经
E.蝶腭神经
— Shirley, I know you ___________ a book about China, Have you finished it?
— Not yet. Maybe next year.
A. wrote
B. have written
C. are writing
D. will write