A元素的原子结构示意图如图1，A元素在化学反应中容易____电子变成____离子，属于____元素 （填金属或非金属）；B元素的离子结构示意图如图2，该离子带____个单位正电荷，该元素的原子核外总共有____个电子。

从方框中选择适当的单词完成短文。

   What's this on the table? It is a ____  of my new classroom. ____  at the picture. ____  can you see ____  the classroom? I can see a ____  desk in the front of the classroom. Some books are ____  the desk. I can see two white ____ , too. There are____  colored chalks (彩色粉笔n them. ____  is the broom (扫帚)? It’s ____  the door. I like this new classroom.

根据意思写词语。

①指能适应各种环境，在任何环境中都能满足。____

②谨慎认真。____

③下得又大又急的雨。____