①元素的非金属性依次增强；
②元素的电负性依次减小；
③元素的第一电离能依次增大；
④最高价氧化物对应水化物的酸性依次减弱．
A：①④
B：②④
C：①③
D：③④
小刘同学在观看世博会的路上骑车闯红灯。如果让你去劝告他，可以运用的法律知识是（ ）
Time now
It's ____ in the morning.
Weather information
Snow has been falling since yesterday.
Suggested ways of transportation(交通工具)
____.
Influence to the school
Some schools in the countryside are ____
More information about the weather
____ will last for at least two more days.
Time for the next ____.
In two hours
