— I didn't hear you in just now.
— That's good. We tried _____ you up.
A:to wake
B:not to wake
C:waking
D:not waking
如图,已知直线AB∥CD,∠C=115°,∠A=25°,则∠E=( )
把12和18分别分解质因数,并指出这两个数有哪些相同的质因数.
12
18
12和18相同的质因数有
I've got a letter from ____ (I/we/me/my/our)friend.
轮船顺流航行时m千米/小时,逆流航行时(m﹣6)千米/小时,则水流速度是____