A：He often helps to teach in a football team.
B：He often teaches them to sing and dance.
C：He often helps to fix up bikes.
从未出现
20
34
24
偶尔出现
15
10
16
经常出现
6
蛋白质消化的最终产物是（ ）
圈出不同类的单词。
____ A. six B.seven C. little D. twenty
____ A. write B. play C. talk D. orange
____ A. white B.pink C. read D. blue
____ A. tiger B.white C. parrot D. frog
____ A. picture B. friend C. brother D. sister
