单项选择题

A．He has never seen a fossil that old.
B．It could be many millions of years old.
C．It is probably a recent specimen.
D．He will ask the lab how old it is.
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单项选择题
A．22℃.B．23℃.C．25℃.D．34℃.
A．22℃.
B．23℃.
C．25℃.
D．34℃.
单项选择题
A．They need to make more efforts.B．They’ll have more work to do tomorrow.C．The others have done the greater part of it.D．They’ve finished more than half of it.
A．They need to make more efforts.
B．They’ll have more work to do tomorrow.
C．The others have done the greater part of it.
D．They’ve finished more than half of it.
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