3xm+2ny8与-2x2y3m+4n是同类项,则m+n=( )。
3
以下不属于蛙的发育阶段的是( )
A.卵
B.蝌蚪
C.蛹
D.幼蛙
根据句意,用括号内所给单词的适当形式填空。
1. My parents often eat vegetables and other ____ (health) food.
2. Ladies and ____ (gentleman)! Welcome here on this sunny day.
3. ____ (cook) is fun and I love it very much!
4. In the ____ (south) part of China, people usually like eating rice.
5. Help ____ (you) to some chicken soup, kids.