在致龋的食物糖中致龋性最强的是（）。
A.果糖
B.蔗糖
C.麦芽糖
D.乳糖
E.淀粉
参考答案：B
用所给单词的适当形式填空
1. Mr Green (appear) in over 40 movies so far.
2. The great poet Yu Guangzhong has written lots of p____．
3.The young man is the lead (sing) in the band.
4. Be sure____ (send)my best wishes to your parents.
5. We must help those (home) children because of the earthquake.
山芋丸功效与作用
