题目内容
用于孤立并向近中舌侧或颊侧倾斜磨牙上的卡环是：（)
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尽管我们所处的时代同马克思所处的时代相比发生了巨大而深刻的变化，但从世界社会主义500年的大视野来看，我们依然处在（)。
It was customary in Newton's time for the great mathematicians of Europe to spend months on solving a problem and then offer it as a challenge to all others.（英译中)
每个队员都对这次胜利作了贡献。（contribute)（中译英)
The most familiar outward signs of aging may be seen in old people, such as the greying of the hair and the wrinkling of the skin.（英译中)
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