问题
选择题
.Mary was _________ the letter from Tom,but it didn’t reach her for some reason.
A．expecting
B．waiting
C．hoping
D．longing
答案
答案：A
搜题请搜索小程序“爱下问搜题”
.Mary was _________ the letter from Tom,but it didn’t reach her for some reason.
A．expecting
B．waiting
C．hoping
D．longing
答案：A
Cu(NO3)2 
CuO
Cu(NO3)2 
CuO
Cu(OH)2
Cu(NO3)2 
CuSO4
Cu(NO3)2