单项选择题

A．It is very economical.
B．It provides them with cheaper meals.
C．It gives a complicated system.
D．It gives free lunch and dinner.
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单项选择题
A．Because it was orange and soft.B．Because it was hard and economical.C．Because it was more abundant and economical.D．Because it looks like pig.
A．Because it was orange and soft.
B．Because it was hard and economical.
C．Because it was more abundant and economical.
D．Because it looks like pig.
问答题
A．Perhaps you are right.B．She’s surely done all right.C．She’s the new class president.D．She’s one of the best students.
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