单项选择题

A．To protect environment.
B．To cool buildings.
C．To change the climates.
D．To provide drinking water.
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单项选择题
A．They help the students to become more cooperative.B．They are very good entertainment for students.C．They make lots of money buy selling tickets.D．They help the students to build good teams.
A．They help the students to become more cooperative.
B．They are very good entertainment for students.
C．They make lots of money buy selling tickets.
D．They help the students to build good teams.
单项选择题
A．He had not expected such a bold question from Pat.B．He wondered why Pat didn’t run away.C．Pat wasn’t afraid of him.D．Pat had a gun in his hands.
A．He had not expected such a bold question from Pat.
B．He wondered why Pat didn’t run away.
C．Pat wasn’t afraid of him.
D．Pat had a gun in his hands.
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