• 14、Thank you very much for taking me with you on that splendid outing to London. It was the first time that I had seen the Tower or any of the other famous sights. If I'd gone alone, I couldn't have seen nearly as much, because I wouldn't have known my way about.
。2021年3月16日星期二2021/3/162021/3/162021/3/16
• 15、会当凌绝顶,一览众山小。2021年3月2021/3/162021/3/162021/3/163/16/2021
• 16、如果一个人不知道他要驶向哪头,那么任何风都不是顺风。2021/3/162021/3/16March 16, 2021
16 3 24 24
19 24
92 12 12
7 12
知识提炼
异分母分数加减法通分时,用分母的最小 公倍数作为通分后分数的公分母,这样计算比 较简便。
小试牛刀
(选自教材P4 T4)
=5 12
=1
=3
20
5
= 11
=2
=1
24
Hale Waihona Puke 321.森林医生。 (选自教材P4 T5)
3-1=2110=11 10 7 70 70 70
23=8 9=17 3 4 12 12 12
5 1=10 1=9 7 14 14 14 14
2.解方程。(选自教材P4 T6)