题干
We need to a plan to help disabled people. Do you have any ideas?
A：cheer up with
B：come up with
C：set up with
答案(点此获取答案解析）
B
We need to a plan to help disabled people. Do you have any ideas?
A：cheer up with
B：come up with
C：set up with
Si + 2CO
SiCl4 ③SiCl4 + 2H2
Si + 4HCl，其中反应①和③属于（ ）
