Scientists have tried many ways to prevent the nuclear reactions from harmful and dangerous radiation. [ 2 分 ] A.giving up B.giving in C.giving to D.giving off

Scientists have tried many ways to prevent the nuclear reactions from harmful and dangerous radiation. [ 2 分 ]
A.giving up
B.giving in
C.giving to
D.giving off

出自：乐山师范学院-综合英语

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