单项选择题

Which of the following most accurately describes the passage

A．A description of a replicable experiment.
B．A refutation of an earlier hypothesis.
C．A summary report of new findings.
D．A confirmation of earlier researc
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单项选择题
It can be inferred from the passage that which of the following has been a factor influencing the extent to which research on mycorrhizal fungi has progressed
A．Lack of funding for such research.
B．Lack of immediate application of such research.
C．Difficulties surrounding laboratory production of specimens for study.
D．Lack of a method for identifying mycorrhizal fung
单项选择题
In the passage the author implied that ______.
A．music did not exist before the Middle Ages
B．we were not better off than the Greek and Roman men
C．there .was not enough evidence to prove that Western music was originated from the ancient Greece and Rome
D．there were no authentic remains of the ancient Roman music
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