单项选择题

A．Because mountainous regions have a very rich biology.
B．Because they can move uphill to get cooler.
C．Because there are no deserts in mountainous regions.
D．Because they need a warmer environment to survive.
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单项选择题
A．Many people are fond of Sabrina.B．Sabrina doesn’t like others to get to know her.C．It’s difficult to get close to Sabrina.D．The woman is encouraging the man to get near to Sabrina.
A．Many people are fond of Sabrina.
B．Sabrina doesn’t like others to get to know her.
C．It’s difficult to get close to Sabrina.
D．The woman is encouraging the man to get near to Sabrina.
单项选择题
A．Beginner.B．Lower intermediate.C．Upper intermediate.D．Advanced.
A．Beginner.
B．Lower intermediate.
C．Upper intermediate.
D．Advanced.
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