二次函数y=x2+6x+l0的最小值是( ),当x( )时,y随x的增大而减小。
l,x<-3
I bought a vase of the Ming dynasty at such a low price at the Sunday market. It was really a nice __________.
A.bargain
B.value
C.sale
D.prize
白头翁汤的功用是
A.清热燥湿,调和气血
B.清热解毒,调和气血
C.清热解毒,凉血止利
D.清热燥湿,凉血止利
E.以上都不是