问题
选择题
- Can I take these magazines home?
- Yes, you ________ , but please return them in two days.[ ]
A) must
B) may
C) should
D) need
答案
答案：B
搜题请搜索小程序“爱下问搜题”
- Can I take these magazines home?
- Yes, you ________ , but please return them in two days.[ ]
A) must
B) may
C) should
D) need
答案：B
氧气
氧化物甲”的转化，反应I的化学方程式为 。