单项选择题

Directions: In the following questions, choose the best answer from the five choices listed.
If
of a number is 7 more than
of the number, what is
of the number

A．12
B．15
C．18
D．20
E． 24

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单项选择题

单项选择题

Perry’s critics in the scientific world ______ that many of the observations he has made during more than a decade of research in Costa Rica have been reported as ______ in popular magazines rather than as carefully documented case studies in technical journals.

A．intimate...hypotheses
B．charge...anecdotes
C．applaud...rumors
D．claim...scholarship
E． apologize...fabrications

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