2.no one has come up with a better explanation of why dinosaurs __________.
a.died away b.died for
c.died of d.died out
解析:选d。考查短语辨析。句意:尚未有人能对恐龙的灭绝作出一个更好的解释。die out意思是“灭绝,消失”,符合语境。die away逐渐消失,逐渐减弱;die for为……献身;die of因……而死。
3.too much drinking will do__________ to your health;you should take the doctor’s advice.
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