[ A] crazily
[ B ] excitedly
[ C ] curiously
[ D ] directly
查看答案
[A] at
[B] for
[C] over
[ D] on
[ A] worrying
[ B] doubting
[ C] caring
[ D] boasting
[A] commercial
[B] traditional
[C] genuine
[D] lively
Why does the author mention dinosaurs at the end of the passage?
[ A] Because they could only live in the warm climate.
[ B ] Because they once dominated the earth.
[ C ] Because their extinction indicates future disasters.
[ D] Because dinosaurs and humans never live in the same age.