Roy thinks he works as as his friend, Dan.
A:hardly
B:harder
C:hard
D:more hardly
青藏高原地区农作物分布在河谷地带的主要原因是( )
已知x1,x2是一元二次方程2x2﹣5x+3=0的两个实数根,试求下列各式的值:
(1)x12+x22;
(2)1x1+1x2.
—I don't like it _______ it is much faster.