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
A trap ______ disguise is what has come to be called a Trojan Horse, from the ancient story of the gift of the wooden horse from the Greeks.
A．offered as a gift in
B．offers a gift in
C．offering a gift to
D．offered a gift of
单项选择题
The Flower Market in San Francisco is ______, and it was established in the 1930's.
A．home of the second largest flower market in the country
B．home to the country's second largest flower market
C．the second flower market in the country's home
D．the home to the second country's large flower market
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