根据1-18号元素的原子结构示意图(下图).回答下列问题: (1)属于稀有气体

题型:填空题

问题:

根据1-18号元素的原子结构示意图(下图).回答下列问题:

(1)属于稀有气体的元素共有___________种,它们原子的最外层电子数分别是_________个;

(2)原子序数是13的元素,其元素符号为__________。它在化合物中通常显__________价,它与原子序数为8的元素形成化合物的化学式为____________。

考点:原子结构示意图化学式的写法和意义元素周期表
题型:填空题

Easy Ways to Boost(改善)Your Mood

_______71_______. Taking an extra moment for yourself will make your day brighter and give you a healthier outlook on life. Here are some simple ways you can bring a little happiness into your life right now:

1. Go for a walk.

Grab your dog, best friend, or your significant other and head out on a brisk(轻快的) walk. Just a little bit of exercise can boost your mood and give you a fresh perspective(态度) on problems that have been bothering you. Think walks are boring? ________72_______. Take a trip to the mall, or even walk to get some frozen yogurt. Make it a fun trip and you’ll surely make it part of your routine.

2.________73________.

After all, laughter is the best medicine. Pick up something that makes you laugh like a funny picture, book, magazine, or a DVD of your favorite comedy. _______74______. Giving yourself time to laugh boosts feel-good endorphins(胺多酚).

3. ________75________ .

Take a photo of yourself doing something you enjoy, like roller skating, skiing, swimming, playing an instrument, or being with friends and family.  Place the picture on your desk to remind yourself that you lead an amazing life and have lots to be happy about.

A.Model behavior

B.Try walking to a place that seems exciting to you

C.Ten minutes of relaxation can do wonders

D.Even the most optimistic people can use a mood boost every once in a whileE. Tell someone that you’re guaranteed to brighten their day

F. You could even plan a date night out to a comedy club

G. Buy something silly

题型:填空题

我国水资源在时间上的分配规律是

A.东南多,西北少

B.东多西少

C.夏秋多,冬春少

D.夏秋少,冬春多

题型:填空题

以下哪一项不是卫生法中须承担的刑事责任( )

A.违反国境卫生检疫规定的犯罪
B.医务人员严重不负责任的犯罪
C.所有造成医疗事故者
D.制造、贩卖假药、劣药的犯罪
E.利用职务之便牟取不正当利益的犯罪

题型:填空题

1895年11月中,强学会成立后,将《万国公报》改名为()

题型:填空题

分析传统木门窗的优缺点?

更多题库