单项选择题

If we don't take immediate actions, pandas are likely to become extinct in ______.

A．3 to5 years
B．1 year
C．25 years
D．2years
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单项选择题
The best title for the passage may be ______.
A．China's Efforts to Clone Pandas
B．China--the Native Place of Pandas Forever
C．Exploring the Possibility to Clone Pandas
D．China's First Cloned Panda
单项选择题
According to Professor Kraemer, the major problem in cloning pandas might be ______.
A．lack of host animals.
B．lack of available panda eggs.
C．lack of funds.
D．lack of qualified researchers.
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