A good ['brekf?st] is import.ant. We can ['i:zili] __ understand it. We have not eaten ['eniθi?] for about twelve hours by breakfast time. Our bodies need food for ['m?:ni?] activities. One good breakfast should be rice or bread, an egg, milk and [fru:t]_ . On a cold morning, a cup of hot [dri?k] is necessary. We must get up ['3:li] to have enough time to eat breakfast. A good breakfast helps us to [smail] more easily. It helps us to be more ['frendli] and also to [w?:k] __ better and play more happily. |
时间(s) | 0 | 20 | 40 | 60 | 80 |
n(NO2)/mol | 0.40 | n1 | 0.26 | n3 | n4 |
n(N2O4)/mol | 0.00 | 0.05 | n2 | 0.08 | 0.08 |