—Yes.They are having a good time.
A:happy
B:happily
C:loud
D:easy
____是 ____的 ____倍.
列式: ____÷ ____= ____
向27.2gCuO、Cu的混合物中加入某浓度的稀HNO3500mL,固体完全溶解后,生成NO和Cu(NO3)2.在所得溶液中加入1mol/L 的NaOH溶液1L使金属离子恰好完全沉淀,此时溶液呈中性,所得沉淀质量为39.2g.则:
- The storybook is very interesting.
- I agree with you. I ______ it twice already.