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【单选题】
The author's purpose in citing those who are repeatedly unemployed during a twelve-month period is most probably to show that ______.A.
there are several factors that cause the payment of low wages to some members of the labor force
B.
unemployment statistics can underestimate the hardship resulting from joblessness
C.
recurrent inadequacies in the labor market can exist and cause hardships for individual workers
D.
a majority of those who are jobless at any time does not suffer severe hardship
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【单选题】Tom and Mary have the same grandfparents. But they don't have the same (相同的) parents. So Tom is Mary's ______. [ ]
A.
cousin
B.
brother
C.
uncle
【简答题】读写器天线发射的电磁波是以球面波的形式向外空间传播，所以距离读写器R处的电子标签的功率密度S为（读写器的发射功率为PTx，读写器发射天线的增益为GTx，电子标签与读写器之间的距离为R）：（）。
【简答题】Both Tom and Mary the exam．
【单选题】.If you read the two compositions carefully,you will find they each other and no wonder Tom and Mary were punished by our English teacher.
A.
are different from
B.
are much like
C.
are similar to
D.
are diverse in
【简答题】根据短文内容，选择正确答案。 I have two good friends. Their names are Tom and Mary. Tom likes sports very much. He often plays soccer with me. He eats healthy food every day. He likes eggs for his breakfast. He ha...
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