单项选择题

Witmer's research leads people to believe ______.

A．Tyrannosaurus Rex had lips and Triceratops had cheeks
B．dinosaurs might have looked like mammals such as sheep
C．dinosaurs might net have looked like what we thought
D．dinosaurs must have looked like birds or crocodiles

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热门试题

单项选择题

One aspect of the recent population trend is the ______.

A．development of complexes of cities
B．increasingly grcat distance between cities
C．transformation of cities into suburbs
D．growth of many small towns

单项选择题

Once you become a soldier, you will be given a monthly ______ by the army.

A．income
B．allowance
C．wage
D．salary