A:1m
B:7m
C:4m
D:-7m
无论是唯物主义者还是唯心主义者,无论他们争论多么激烈,但是他们始终也逃脱不了对哲学基本问题的回答。这个基本问题是( )
What did the writer think of Tom when he heard of his death?
写出下列化学符号:2个镁离子____;四氧化二氮____.