【判断题】【消耗次数：1】
截交线是截切平面与立体表面的交线
①
正确
②
错误
参考答案：
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【简答题】
用平面切割立体，平面与立体表面的交线称为，该平面为，由截交线围成的平面图形称为。[填空(1)]
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contest
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competition
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caution
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notice
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remainder
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will be
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better
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aging
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【单选题】
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not wanted
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not wanting
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