题干
The chairwoman hated his_____, so she just stood at platform, _____ him.
A：cutting off; glancing at
B：cutting down; staring at
C：cutting in ; glaring at
D：cutting out; watching
答案(点此获取答案解析）
C
衰变成钋核
并放出一个粒子,其半衰期为3.8天.1 g氡经过7.6天衰变掉氡的质量,以及