单项选择题

A．It’s because there are many developing nations.
B．It’s because people use too many man-made materials.
C．It’s because we have more and more industry.
D．It’s because we are building more vehicles.
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单项选择题
A．Frequently.B．Seldom.C．Occasionally.D．Regularly.
A．Frequently.
B．Seldom.
C．Occasionally.
D．Regularly.
单项选择题
A．To make an appointment to look at a house.B．To get information about special housing.C．To ask about getting a loan to buy a house.D．To renew his housing contract.
A．To make an appointment to look at a house.
B．To get information about special housing.
C．To ask about getting a loan to buy a house.
D．To renew his housing contract.
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