单项选择题

The person who______ this type of approach for doing research deserves our praise.

A．generated
B．originated
C．speculated
D．manufactured
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单项选择题
Many types of rock are __ from volcanoes as solid, fragmentary material.
A．ejected
B．injected
C．propelled
D．flung
单项选择题
How is it______ your roommate's request and yours are identical
A．if
B．so
C．what
D．that
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