恐龙灭绝问题求解

wwc008love · 发表于 2011-5-28 16:04:11

The theory that the impact of a giant meteorite caused the extinction of the dinosaurs is based on the evidence that a cloud of dust from the impact blocked off sunlight around the globe for months,redcing temperetures and destroying the dinosaur's food suppply.
Which of the following,if true,casts the most serious doubt on the theory above?
A Dinosaurs are believed to have been cold-blooded and thus very sensitive to any temperature change.
B Some dinosaurs lived in regions where their food supply was not was not well adapted for long periods of cold and darkness
C Many large animals that existed during the time of the dinosaurs and shared a common food supply with them continued to populate the Earth long after the extinction of the dinosaurs
D A large volcanic explosion that strewed dust in the air and blocked out sunlight was the cause of death of animals within hundreds of miles of the eruption.
E Many of the largest dinosaurs were herbivorous relying exclusively on vegetation for their dietary needs.
求解。。

kikisunflower · 发表于 2011-5-28 16:12:51

C casts a counter-example on the theory.

skyemotion · 发表于 2011-5-28 20:05:17

agree with C

恐龙灭绝问题求解

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