单项选择题

Shopping underground is clean（）

A．without air pollution
B．of water
C．and tidy
D．and beautiful

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单项选择题

Which of the following is TRUE according to the 4th paragraph（）

A．Birds hardly pay attention to their young.
B．Baby crocodiles can look after themselves well.
C．Some dinosaurs took care of their young.
D．Birds and crocodiles take good care of their youn

单项选择题

This passage mainly talks about （）

A．the tools made by "Flores Human"
B．the language used by "Flores Human"
C．the evolution of "Flores Human"
D．the major surprising findings about "Flores Human"