单项选择题

Dumped waste might contaminate water supplies.（）

A．destroy
B．decrease
C．delay
D．pollute

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It seems that only Mary is eligible for the job.（）

A．prepared
B．trained
C．qualified
D．guided
单项选择题
This poem depicts the beautiful scenery of a town in the South.（）

A．praises
B．writes
C．imitates
D．describes
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