问题
选择题
They are going to______ the town to find the murder. [ ]
A. search for
B. look for
C. search
D. look
答案
C
搜题请搜索小程序“爱下问搜题”
They are going to______ the town to find the murder. [ ]
A. search for
B. look for
C. search
D. look
C
四种离子，其中K+、Fe3+、Cl-三种离子的个数比为5:2:3，则溶液中Fe3+与
的个数比为（）。