单项选择题

Passage Two
Questions 30 to 32 are based on the passage you have just heard.

A．By using their body to pave the way for others.
B．By covering holes inside their nest.
C．By determining which one is the best fit.
D．By stepping on remainder’s back.
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单项选择题
A．She is reluctant to change their trip.B．Himalayas is known for the peaceful atmosphere.C．She thinks she will enjoy this trip.D．Fresh air is the only thing she pursues.
A．She is reluctant to change their trip.
B．Himalayas is known for the peaceful atmosphere.
C．She thinks she will enjoy this trip.
D．Fresh air is the only thing she pursues.
单项选择题
A．They lose water constantly.B．They contain a relatively lower concentration of salt.C．They neither lose nor absorb water~D．They possess a relatively higher concentration of salt.
A．They lose water constantly.
B．They contain a relatively lower concentration of salt.
C．They neither lose nor absorb water~
D．They possess a relatively higher concentration of salt.
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