问题
选择题
Let's enjoy the song "Yesterday once more". It sounds _____. [ ]
A. bad
B. sadly
C. well
D. wonderful
答案
答案：D
搜题请搜索小程序“爱下问搜题”
Let's enjoy the song "Yesterday once more". It sounds _____. [ ]
A. bad
B. sadly
C. well
D. wonderful
答案：D
2SO3达到平衡后，通入18O2一定时间后，18O存在于[ ]