（1）非金属单质A是实验室里常用的惰性电极材料，A元素原子基态时的电子排布图为 。
（2）B原子基态时2p原子轨道上有3个未成对电子，下列叙述正确的是 （填字母序号）
a．B的气态氢化物的沸点在同族元素的氢化物中最低
b．B的第一电离能、电负性都比A的大
c．A的气态氢化物比B的气态氢化物稳定
d．A的含氧酸一定比B的含氧酸酸性强
（3）铜单质及其化合物在很多领域有重要的用途，如超细铜粉可应用于导电材料、催化剂等领域中。超细铜粉的某制备方法如下：
①[Cu(NH3)4]SO4中，N、O、S三种元素的第一电离能从小到大的顺序为： 。
②SO42－空间构型是 。 写出一种与SO32－互为等电子体的分子 。
③NH4CuSO3中的金属阳离子的结构示意图为 。
要到微信小程序或APP查看答案哦。
实在点不开答案，可以分享到微信，
在微信里面查看答案。
APP具体操作流程为：
The Amazing Kids! PenPals Program is a literacy-based (基于读写能力的), traditional letter-writing pen pal program, available to all children aged 5-17 worldwide.
At $10 per child, our program is a low-cost and fun way to help your children practice their literacy skills while they are making new friends. Groups of 15 or more receive a 50% discount.
Children love our program because:
●It helps them develop new (and possibly life-long)friendships.
●It allows them to practice the traditional form of letter writing and correspondence.
●They love getting letters in the mail from their pen pals!
Parents love our program because:
●It offers one of the few remaining choices for finding an established, safe and trusted traditional pen pal program to their children.
●It helps strengthen communication and literacy skills taught in their children’s classroom.
●It helps open their children’s eyes to a larger world, and other cultures and traditions outside their own.
●Many parents remember having a pen pal when they were children and want to give their children the same positive, fun learning experience.
●Parents love helping their children find new friends of their own age and gender.
Frequently asked questions
Why is there a fee?
We are a small, all-volunteer non-profit organization, and the fees help cover our cost of running the program.
How did the Amazing Kids! PenPals Program begin?
The program began as a way of reaching out to the children affected by the devastating (毁灭性的) hurricanes of 2005. Our hope was that by matching young hurricane survivors with a new pen pal, we could help them in their recovery from the trauma (创伤) they experienced.
The program is now available to all children worldwide. We continue to welcome teachers, youth groups or agencies who like to work with hurricane survivors.
How does it work?
Amazing Kids! will match students of the same gender and age with other students who may share similar interests and hobbies, based on the information provided on the registration form.
I’ve completed all forms and made my payment. What happens next?
Someone from Amazing Kids! will contact you once a match has been found. You will be asked to call the other parent, teacher or group leader of the pen pal Amazing Kids! has selected. If both adults agree that the pen pal match is a good one, then the students may begin writing to each other. If the match is determined not to be a good one, Amazing Kids! will try and find an alternative match.
小题1:.If a group of twenty children want to join the program, they should pay _____altogether.
A．$50
B．$100
C．$150
D．$200小题2:.Parents may agree the program helps children_________.
A．travel around the world
B．communicate well with others
C．Meet many famous people
D．get good marks in exams小题3: In the beginning the Amazing Kids! PenPals Program was set up for the kids who ______.
A．suffered from the hurricanes
B．were willing to make pen pals
C．were good at writing letters
D．wanted to help hurricane survivors
已知m2+n2-14m+2n+50=0，求m与n的值．
--- Have you got ready for the meeting?
--- Not yet. We need ________.
A．three other chairs
B．other three chairs
C．another three chairs
D．three another chairs
领海
早期发现肺结核最有效的方法是
A．痰菌检查
B．X线检查
C．血沉测定
D．纤维支气管镜检查
E．结核菌素试验