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【判断题】

节蕨植物始现于早泥盆世,石炭纪至二叠纪全盛,早白垩世后绝灭。

A.
正确
B.
错误
举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】中国的含煤地层较早的石炭一二叠纪含煤地层先后经历了那些构造运动

A.
印支运动、燕山运动、喜马拉雅运动
B.
印支运动、喜马拉雅运动、燕山运动
C.
燕山运动、印支运动、喜马拉雅运动
D.
燕山运动、喜马拉雅运动、印支运动

【单选题】Madagascar There are at least 8 million unique species of life on the planet, if net far more, and you could be forgiven for believing that all of them can be found in Andasibe. Walking through ...

A.
At least 8 million unique species of life.
B.
More than 8 million unique species of life.
C.
A library of life on the planet.
D.
A kind of palm which can be found nowhere.

【单选题】请选出1种观果植物( )。

A.
佛手
B.
油茶花
C.
高山榕
D.
假槟榔