单项选择题

According to Professor Kraemer, the main problem in cloning pandas would be the lack of_______.

A．host animals
B．funds
C．available panda eggs
D．qualified researchers
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单项选择题
The goal of Noah's Ark Project is to_______.
A．make efforts to clone the endangered panda
B．save endangered animals from extinction
C．implant embryo into a host animal
D．collect DNA of endangered animals to study
单项选择题
Which of the following examples does not make time seem to pass more rapidly
A．A trip to a familiar place.
B．Office work with schedules and appointments.
C．Life of a businessman filled with appointments.
D．The learning of something difficult and interesting.
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