填空题：A stamp is worth a million and a half times its original val

题目内容：
A stamp is worth a million and a half times its original value because ______.
A) it was misprinted a hundred years ago
B) of its rareness and age
C) few collectors have it
D) it was made in British colonies
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答案解析：

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分类：英语三级B级  题型：填空题
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The Internet barter system relies heavily on ______.（　　）

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分类：英语三级B级  题型：填空题
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分类：英语三级B级  题型：填空题
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分类：英语三级B级  题型：填空题
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根据你所听到的回答题A．B) Reserving a roo B．C) Booking an air ticke C．D) Reserving a sea

分类：英语三级B级  题型：填空题
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