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We should spend our time on schoolwork in order to ________ a good high school.
1年前
We were very happy , when we were having a _____ ( 野餐 ) last week.
1年前
I was a student from the countryside. My teachers thought I was the 小题1:________ student.
1年前
已知函数f(x)=ax²-2ax+2+b(a>0),若f(x)在区间[-1,0]上有最大值5,最小值2,求a,b的值 已知f(x)=a+1/2的x次方-1为奇函数,求常数a的值及f(x)的值域。
1年前