二次函数y=ax2+bx+c(a、b、c为常数且a≠0)中的x与y的部分对应值如下表:给出了结论: (1)二次函数y=ax2+bx+c有最小值,最小值为-3; (2)当−<x<2时,y<0;(3)二次函数y=ax2+bx+c的图象与x轴有两个交点,且它们分别在y轴两侧.则其中正确结论的个数是( )
The Smiths have decided a house near the sea.( )
buy
bought
buying
to buy
The boss was very rich, it didn't make him happy because be was always worried about losing his money.( )
but
and
or
although
exciting boat race it was!Many people watched it.( )
What a
What an
How
How a
The kids learn to be independent,the it is for their future.( )
early;good
early;better
earlier;better
earlier;good
My parents will bring me to Shanghai Disney land the day after tomorrow.
.( )
I'm sorry to hear that
It's my pleasure
Best wishes to you
Have a good trip