单选题：Poor schooling was the root of the unemployment problem.

题目内容：

Poor schooling was the root of the unemployment problem. A．base
B．result
C．force
D．cause

参考答案：

答案解析：

took me exactly a week to complete the work

took me exactly a week to complete the workA．start B．achieve C．finish D．improve

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根据下列材料请回答题：Rising Tuition in the USEvery Spring，US university administrators gat

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