A：压强减少，气体溶解度增大
B：压强减小，气体溶解度减小
C：温度升高，气体溶解度减小
D：温度降低，气体溶解度增大
——Though radio and television are ____ popular in the world today, I think the TV is ____ useful.——Of course, on TV we can see and hear what is going on home and abroad.
—Who do you want to talk with at the end of the speech?—The man_________ Mr White.
“‘黄金水道’、多河港”体现了长江的( )
