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 not 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

The passage focuses on ______.

A．dincosaur's geographical location
B．shifting views of dinosaurs
C．migration patterns of dinosaurs
D．geologic activity of Earth

单项选择题

The discovery of a new type of ceratopsian dinosaur suggests ceratopsians ______.

A．migrated to North America around 70--80 million years ago
B．arrived in Asia from North America about 90 million years ago
C．originated in Asia and later migrated to North America
D．could have moved to Asia from North America long ago