问题
选择题
The teacher told us __________loudly in the library. [ ]
A. not talk
B. doesn't talk
C. not to talk
D. didn't talk
答案
答案：C
搜题请搜索小程序“爱下问搜题”
The teacher told us __________loudly in the library. [ ]
A. not talk
B. doesn't talk
C. not to talk
D. didn't talk
答案：C
” 表示氧原子，“
”表示氢原子，据图回答：该示意图说明了化学变化前后_______的种类和个数都不发生变化 