问题
选择题
Everything is all right, ______? [ ]
A. is 'it
B. are they
C. aren't they
D. isn't it
答案
答案：D
搜题请搜索小程序“爱下问搜题”
Everything is all right, ______? [ ]
A. is 'it
B. are they
C. aren't they
D. isn't it
答案：D
溶液，两烧杯中都有沉淀生成。下列判断正确的是
中沉淀可能比乙中的多