-What did he die________?
-He died________ hunger.
A:of ;from
B:from; of
C:from ; from
D:of ; of
It was only after he had read the papers ________ Mr. Gross realized the task before him was extremely difficult to complete.
如图,两条直线l1和l2的交点坐标可以看作下列方程组中的解( )
I on my way here and had to ask the police for help.
已知x=2y=1是二元一次方程组mx+ny=8nx-my=1的解,则2m-n的平方根为( )