Sulphur has occasionally been found in the earth in an almost pure state.

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问题 Sulphur has occasionally been found in the earth in an almost pure state.

选项 A、regularly
B、accidentally
C、sometimes
D、successfully

答案C

解析

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本试题收录于：职称英语理工类基础题库职称英语分类

职称英语理工类基础

职称英语

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Sulphur has occasionally been found in the earth in an almost pure state.

职称英语理工类基础

职称英语

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EatforaGoodandHealthfulLifeFood(1)usalive.Itisoursustenanceandourpleasure.Butrecently,researchhasshownthat

Inordertolivelonger,weshouldpostponetheprocessofaging.Peoplewanttoliveforevernowadays.

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