面发育沟常跨过近中边缘嵴到达近中面的牙是()
A.A
B.B
C.C
D.D
E.E
参考答案:C
I ________the day before yesterday, I’ve _________for 2days.
A.arrived, come back.
B.reached, returned
C.got, returned back
D.arrived, been back
以下选项中,当x为大于1的奇数时,值为0的表达式是( )。
A.x%2=1
B.x/2
C.x%2!=0
D.x%2=0