It can be inferred from the passage that if birds started flying milli-考呗网

专四

单选题It can be inferred from the passage that if birds started flying millions of years earlier than scientists previously thought

A．Archaeopteryx can perform very intricate flyin
B．Archaeopteryx is unlikely to be a prime transitional species between reptiles and bird
C．fossils of those first flying birds are bound to be excavated soo
D．a further investigation should be implemented in Archaeopteryx's anatom

参考答案：B进入在线模考

【定位】第2、6段。
【解析】推理题。根据第6段提到capable of some degree of powered flight．始祖鸟被认为是“从爬行动物，也许是恐龙，到今天鸟类的演变中重要的过渡物种”。但是，题干中说如果“birds started flying millions of years earlier than scientists previously thought”，那么飞行能力极强的始祖鸟极可能并不是主要的过渡物种了．故选项B正确。
【点睛】选项A、C、D文中没有提及。

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