Bylisteningtothesoundsfishesmake,mancanlearnallthefollowingexcept______.
A.theirsizes
B.theusualpatternoftheirmigrations
C.theirenvironments
D.theirhabits
正确答案：A答案为A。根据第二段第二句，Bylisteningtothem，hecanlearnagreatd ealaboutthehabitsofcreaturesthatmakethem，thesizeoftheschooltheyform，thepatternsoftheirmigrations，andthenatureoftheenvironmentsinwhichtheylive作出该项选择。只有选项A没有提到。
