某宝石对称型为L4PC,已知其某个晶面在X.Y和Z晶轴上的截距系数分别为2、1和∞,其晶面符号(米勒符号)为()。
参考答案:120
根据实际情况回答问题。
1. Are you as tall as your mother?
2. What did you do last weekend?
3. Are there any public signs in your school?
4. Is it often rainy in summer in Nanjing?
You'd better not _______ school again. Miss Liu is very angry with you. [ ]
A. to be late for
B. be late at
C. to be late at
D. be late for