单项选择题

A．This class is particularly important.
B．The professor in this class lectures a lot.
C．It’s necessary to come to class and be active.
D．All students must attend the lab.
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单项选择题
A．They thought that the gods were all crazy.B．They were isolated from the outside world.C．They enjoyed living in the peaceful desert.D．They worshipped the gods all the more after the incident.
A．They thought that the gods were all crazy.
B．They were isolated from the outside world.
C．They enjoyed living in the peaceful desert.
D．They worshipped the gods all the more after the incident.
单项选择题
A．New designs are being adopted.B．Advertisements are being widely used.C．New technology is being employed.D．More synthetic materials are being introduced.
A．New designs are being adopted.
B．Advertisements are being widely used.
C．New technology is being employed.
D．More synthetic materials are being introduced.
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