A:SO42->Na+>NH4+>OH->H+
B:Na+>NH4+>SO42->H+>OH-
C:SO42-=Na+>NH4+>H+>OH-
D:SO42-=Na+>H+>NH4+>OH-
The ______ of living areas makes wild animals become fewer than before.
将下列图片和句子配对。
① ____ A. Color the bag.
② ____ B. How many pies? Eight pies.
③ ____ C. It goes moo, moo.
④ ____ D. What color is it? It's yellow.