单选题：Agriculture is the country's chief source of wealth, _______

题目内容：

Agriculture is the country's chief source of wealth, __________rice by far the biggest cereal crop. A．is
B．been
C．be
D．being

参考答案：

答案解析：

How many athletes took part in the 2006 Winter Olympics?

How many athletes took part in the 2006 Winter Olympics?A．85. B．1,924. C．2,500.

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According to the passage, banks create online services toA．compete for customers

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Greeks must __________ to keep the dead resting in everlasting peace.A．rent a gr

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The man warns the woman NOT toA．miss her card game. B．stay up too late. C．take t

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文章主要内容概括的常用方法不包括（　　）。A．提句概括法 B．归纳段意法 C．合并段落法 D．综合要素法

分类：专四题型：单选题