根据下图回答问题(1)写出标有序号的仪器名称:① ;② 。(2)用高锰酸钾制取氧气时,所选用的发生装置是(填序号,下同) ,收集装置是C或 ,反应的化学方程式为 。(3)用大理石和稀盐酸制取二氧化碳时,所选用的发生和收集装置为 。
She wondered what use she would _______ this chance.
_____ learn more knowledge, the students stay at school on Sunday.
The two companies are competing ___ each other to get into the Chinese market.
If you don’t want to choose the thinner one, ___.
---What do you think of the movie? ----,_____, the movie isn’t interesting enough, though lots of money has been spent on it.