— How many _____________ are there?
— Nineteen.[ ]
A. box
B. boxs
C. boxes
答案:C
— Do Liu Li and Liu Ying _____, Mary?
— Yes, they do.[ ]
A. look same
B. look the same
C. look like
D. look the same as
良性、恶性肿瘤的主要区别是()
A.发生部位
B.生长方式
C.转移途径
D.核分裂多少
E.分化成熟的程度与生长特点