It can be inferred from the passage that if birds started flying millions of years earlier
正确答案
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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 flying.
B．Archaeopteryx is unlikely to be a prime transitional species between reptiles and birds.
C．fossils of those first flying birds are bound to be excavated soon.
D．a further investigation should be implemented in Archaeopteryx"s anatomy.
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正确答案：B
第6段提到capableofsomedegreeofpoweredflight，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“birdsstartedflyingmillionsofyearsearlierthanscientistspreviouslythought”，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B正确。