问题
选择题
—When were you born?
—I was born______December 3rd , 2000. [ ]
A. for
B. in
C. on
D. at
答案
C
搜题请搜索小程序“爱下问搜题”
—When were you born?
—I was born______December 3rd , 2000. [ ]
A. for
B. in
C. on
D. at
C
用“+”或“-”连结M、N，有三种不同的形式，M+N、M-N、N-M，请你任取其中一种计算，并化简求值，其中x:y=5:2。