单项选择题

With high hopes, the company sent samples of the substance to scientists, but they couldn't（）any practical uses for it

A．come up with
B．do justice to
C．get even with
D．look up to

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单项选择题
The prescription privileges of psychologists is probably NOT the cause for ______.
A. divisions within the psychological field
B. their overwhelming oppositions to the gaining of such a right
C. a greater division between psychologists and other professions
D. a greater unity between psychologists and other professions
单项选择题
65（）

A. vetted
B. called
C. connected with
D. contacted with
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