放大电路也是构成其他模拟电路,如滤波、振荡、稳压等功能电路的基本单元电路。()
参考答案:对
句型转换.
1. She said,"I will have a birthday party for Li Hua."(改为间接引语)
She said _________a_________ _________ _________a birthday party for Li Hua.
2. Tom said,"I go to the supermarket every Sunday."(改为间接引语)
Tom said__________ _________ to the supermarket every Sunday.
3.What a heavy snow!(用how来改写感叹句)
__________ _________the snow is !
4. "Sit down," the teacher told me.(改为间接引语)
The teacher________ _________ _________ sit down.
5. He is watching TV now.(用al five yesterday afternoon来替换时间状语)
He__________ ________ ________ at five yesterday afternoon.
下面四图是同种生物4个个体的细胞示意图,其中A对a为显性、B对b为显性,哪两个图示的生物体杂交后,后代出现4种表现型6种基因型()
A.图1和图3
B.图1和图4
C.图2和图3
D.图2和图4