8-2答案

函数单调性的定义

1: C
2: D
3:

函数的表示法

1: C
2:
2 , 1/2
3:
（）
（）
（）值域为，当时，函数值随自变量的增大而增大，当时，函数值随自变量的增大而减小，当时，函数值随自变量的增大而增大．

记叙文-writing

1. (1) :
   good, close, harmonious, etc
2. (2) :
   In the final part of one race, Jonny was about to fall and Alistair was near him.
3. (3) :
   Alistair would choose to help his brother win the race. Because from the 1st paragraph we can know that the brothers usually encourage and support each other.

   力的合成

   1:
   甲
   2: B,C
   3:
   这两个力的合力大小为

   氧化还原反应中的强弱规律

   1:
   √ , × , × , ×
   2: A

   走进二十大——什么是中国式现代化

   1: C
   2: B

   要想“富”，先修路！

4. (1) : A
5. (2) : D