下列过程中，没有发生化学变化的是[ ]
A.将胆矾晶体研碎至细末
B.铜丝在火焰上灼烧至黑色
C.新鲜牛奶久置后变味
D.人体组织消化葡萄糖
答案：A
用单词的正确形式填空。
1. _____ (drink) milk is good for our health.
2. Do you like to eat healthy or _____ (health) food?
3. There is no _____ (different) between us.
4. Good food and exercise help us _____ (study) better.
5. My grandma looks very young because she _____ (exercise) every day.
形象想像
