| A．原子序数A > B | B．核外电子数为A > B | C．原子半径A > B | D．离子半径 A—> B2+ |
A，原子序数B>A。
B，核外电子数B> A。
C，原子半径B>A。
D，离子半径大小与离子核电荷数，离子所带电荷数目有关，离子核电荷数越多，离子所带电荷数目越多，那么离子半径越小。所以D正确。
| 完形填空。 | ||||
| I dropped my 5-year-old daughter off at the day care centre (育儿中心) yesterday. There we saw one of her friends sitting at a table 1 , crying. She sometimes gets 2 when her mom leaves. My daughter often 3 with her, and they're good friends. When we saw the little girl 4 , I asked my daughter if she wanted to go and 5 with her. She said, "Yes, I don't want her to be 6 ," and then took her breakfast to sit beside her friend. I watched her 7 her food and talk to the little girl. Walking back to my car I was very 8 to know that my little girl had a kind 9 . When I got home last night, I asked her how her day had been. She said that her 10 wasn't sad any more. She was proud to have shared (分享) her 11 with her and played with her all day. I praised my daughter for being such a caring friend and 12 her that I was very proud of her. She 13 , and told me that she didn't like to see people sad. I hugged her and told her what a wonderful girl she was. 14 , she said "I'm Daddy's little girl!" I couldn't help but smile, and was proud to be her dad. My little girl has 15 me a lot. Because of her I do my best to make people who may be sad smile. | ||||
|