题目内容

There is a direct __________ (relation) between exposure to sun and skin cancer.

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It was a __________(wonder) occasion which we will cherish for many years to come.

Graduate school is one way to get specialized knowledge, although __________ (extend) college education isn’t always a good investment from a purely economic standpoint.

If you should be fired, your health and pension benefits will not be __________ (automatical) cut off.

I like cats, but __________ (unfortunate) I'm allergic (过敏的) to them.