A． was most active in the mid-1960
B． has been ended entirel
C． has been strictly regulate
D． is still very popula

A． a country could join only when being a whaling natio
B． had the right to end commercial whaling entirel
C． collected the world's opinion to show concerns for whale
D． had no authority for punishing violator

A． Several species of whales now face extinctio
B． The world is less fascinated with whales nowadays no
C． Norway, Iceland and Japan are the only commercial whaling nation
D． The blue whale is the largest animal in the worl