题目

构造原理揭示的多电子原子的电子排布能级顾序,实质是各能级能量的高低。若以E(n1)表示某能级的能量,则以下各式中正确的是(    ) A.E(3d)>E(4s)>E(3p)>E(3s)                      B.E(5s)>E(4f)>E(4s)>E(3d)  C.E(4s)<E(3s)<E(2s)<E(1s)                      D.E(5s)>E(4s)>E(4f)>E(3d) He risked ________ his job to see me off. [  ] A. losing B. to lose C. being lost D. lost
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