已知x=1是一元二次方程3x2-6x+m=0的一个解,求m的值.
将x=1代入方程3x2-6x+m=0得,
3×12-6×1+m=0,
即3-6+m=0,
所以m=3.
句型转换。
1. Could you please follow me?(改为否定句)
Could you please _______ _______ me?
2. —Would you mind waiting for a little while?(作出回答)
—_______ _______ not.
3. This term he is not going to learn French. He'll learn Japanese instead. (同义句转换)
He is going to learn Japanese _______ _______ French this term.
4. They are doing some shopping. (改为一般将来时)
They _______ _______ some shopping next weekend.
5. I'm sorry for being late for school. (就画线部分提问)
_______are you sorry_______?
既能凉血止血,又能化痰止咳,生发乌发的药物是()
A.大蓟
B.藕节
C.侧柏叶
D.地榆
E.三七