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古生物学与地质学发现，一些新物种出现的突然性和缺少中间过度类型的现象，达尔文对此的解释是：沧海桑田的地理反复。
A.
正确
B.
错误
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举一反三
【单选题】(1)If you are a young person and interested in geology(地质学) ，then Rockwatch is the club for you. When You Join , New memberships receive a Rockwatch Rox file each. This has the information and top tip...
A.
do field work
B.
join the club
C.
buy a field notebook
D.
start studying geology
相关题目：
【单选题】(1)If you are a young person and interested in geology(地质学) ，then Rockwatch is the club for you. When You Join , New memberships receive a Rockwatch Rox file each. This has the information and top tip...
A.
do field work
B.
join the club
C.
buy a field notebook
D.
start studying geology
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