A:吸附或结合在蛋白质等物质上
B:能够流动
C:是生物新陈代谢活动的介质
D:是良好的溶剂
-- Would you please show me your new radio?
-- I'm sorry. I ____ (listen) to the music. I didn't catch you.
判断对错.
真分数小于1.
联合国的发展目标不包括