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题目内容
（国家开放大学管理英语2）
What solution does Melinda offer?
选择一项：
a.
Buy a new filter.
b.
Clean the filter regularly.
c.
Repair the filter.
选择一项：
a.
Buy a new filter.
b.
Clean the filter regularly.
c.
Repair the filter.
参考答案
