单项选择题

It has been proposed by many linguists that human language______,our biologically programmed abilith to use language, is still not well defined and understood.

A．potentiality
B．perception
C．faculty
D．acquisition
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单项选择题
Thousands of Medicare patients with chronic medical conditions have been wrongly_____access to necessary care.
A．grudged
B．denied
C．negated
D．invalidated
单项选择题
There have been demonstrations on the streets____the recent terrorist attack.
A．in the wake of
B．in the course of
C．in the context of
D．in the light of
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