单项选择题

China's economic reform is aimed at separating enterprises from the government. It has been implemented for almost 20 years, but breakthroughs ______.

A．have been made yet
B．have yet to make
C．have yet to be made
D．to have yet made
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单项选择题
The gap between those at the lowest level and those at the highest level of income has increased ______, and is continuing to increase.
A．substantially
B．successfully
C．succinctly
D．sufficiently
单项选择题
With its anti-terrorism campaign taking ______ over anything else, the government is extending its job and running in more affairs.
A．superiority
B．priority
C．majority
D．polarity
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