Fruit tree radiation mutation breeding often uses pollen as the test material, because it is not easy to produce chimeras.
A: 正确
B: 错误
A: 正确
B: 错误
举一反三
- Fruit tree radiation mutation breeding often uses pollen as the test material, because it is not easy to produce chimeras. A: 正确 B: 错误
- Crude oil prices are important in determining gasoline prices because crude is the primary raw material used to produce gasoline and other petroleum products. A: 正确 B: 错误
- Under a serpent’s temptation, Eve ate a fruit from the Tree of life. A: 正确 B: 错误
- Ahigher annual growth rate in material uses indicates an increasing intensity of material uses
- ________ a store or salesperson uses this technique, you often get excited. A: If B: Where C: When D: Because