【单选题】下列原子半径由小到大排列,顺序正确的是:
【简答题】如下图所示轮系,已知:Z 1 =20,Z 2 =40,Z 3 =80,Z 4 =Z 5 =30,Z 6 =90。求i 16 =?
【单选题】在 Word 中,表格中的“公式”命令,选择所需的函数对表格单元格的内容进行统计, 以下叙述 ________ 是正确的
A.
当被统计的数据改变时,统计的结果不会自动更新
B.
当被统计的数据改变时,统计的结果根据操作者决定是否更新
【简答题】While she was on earth she met the herd boy Niulang and they fell in love. (Page 7) 【考点提炼】 while做连词 翻译:在我成长期间,我得到了很多农业专家的帮助。
【简答题】While she ________ TV, she ________ a sound outside the room.A. was watching; was hearing B. watched; was hearing C. watched; heard D. was watching; heard
【单选题】Choose the best answer. 3. While she ________ TV, she ________ a sound outside the room.
A.
was watching; was hearing
【单选题】在减数分裂中,后期I和后期II分别发生的:
D.
姐妹染色单体的分离,非姐妹染色单体的自由组合