已知：则下列变形错误的是[]A.R=r1+r2B.R=C.R=D.-八年级数学

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• The word "moon" is an ancient word _____ "mouth". [ ]A. related to B. related wi
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• These are all good team sports and will help you ______ your strength and you will meet lots of peop
• I knew he failed in the final exam the moment I ______ him crying alone in the classroom.[ ]A. at th
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