摘要： Radium salts, which have been found to in bones, give rise to cancers of the bone. A. pile up B. build up C. keep up D. pull up [答案] B. build up. [注释] build up 积累.pile up 堆积.keep up 保持.维持. pull up 停车.
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Radium salts, which have been found to _____ in bones, give rise to cancers of the bone.
A. pile up B. build up C. keep up D. pull up
查看习题详情和答案>>Radium salts, which have been found to _____ in bones, give rise to cancers of the bone.
A. pile up B. build up C. keep up D. pull up
查看习题详情和答案>>Radium salts, which have been found to _____ in bones, give rise to cancers of the bone.
A. pile up B. build up C. keep up D. pull up
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