The International Whaling Commission(IWC)was an organization that
A. a conntl'y could join only when being a whaling nation-
B. had the right to end commercial whaling entirely.
C. colleered the world’S opinion to show concerns for whales.
D. had no authority for punishing violators．
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This passage is mainly about
A. corporate culture．
B. corporate philanthropy．
C. corporate financing．
D. comte image．
According to researchers ill the Chicago symposium,
A. biologists have properly realized the conllllon existence of seismic signaling.
B. seismic signaling is a means of communication that has been comprehensively studied.
C. seismic signaling call show many mysterious featums of animal behavior.
D. the research approach has led to the fruitful research into seismic signaling.
The elephant seal’S bulls are notorious for
A. slugging them out for terdtofial defense for their offsprings．
B. fighting with each other to own harems of females.
C. their act of aggression against other animals．
D. competing fiercely with each other for locating meals。
The majodty of back-formed Words are
A. nouns．
B. adjectives．
C. verbs．
D. adverbs．
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