单项选择题

The reconstruction of a fossilized animal's external appearance is considered necessary in order to______.

A．satisfy popular curiosity
B．answer scientific questions
C．establish its activities
D．determine its eating habits
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单项选择题
The muscles of a fossilized animal can sometimes be reconstructed because______.
A．they were preserved with the rest of the animal
B．they were lodged inside the animal's skull
C．they were hardened parts of the animal's body
D．they were attached to the animal's skeleton
单项选择题
According to the passage, the soft part of fossilized animals______.
A．can always be accurately identified
B．have usually left some traces
C．can usually be reconstructed
D．have always vanished without any trace
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