As we know, too much to X?rays can cause skin burns, cancer or other damage to the body.A．contact B．appealC．exposure D．contribution 题目和参考答案——青夏教育精英家教网—

题目内容

As we know, too much ________ to X?rays can cause skin burns, cancer or other damage to the body.

A．contact B．appeal

C．exposure D．contribution

【解析】C　[exposure to sth harmful“面临(有害物质)，遭受”。]

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The Cave of Lascaux

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