①国家权力机关的监督

②司法机关的监督

③审计部门的监督

④监察部门的监督

已知x﹣3y=0，求$\frac{2x+y}{x^2-2xy+y^2}$•（x﹣y）的值． 

完形填空。

    Today is Saturday. It's 1. Jack and Kitty go to a park in the country side. The wind is 2 gently. The clouds are moving slowly in the  3. Some birds are singing in the trees. They are flying a kite 4. The kite flies  5 the tree. Suddenly(忽然)，The wind 6  strong. The clouds are moving quickly. The strong wind blows their kite away. Jack and Kitty go home quickly.