在分度盘直径相同的情况下，径向分度比轴向分度精度（）。
A.要低
B.要高
C.相等
参考答案：B
I always invite my friends _____________ my house. [ ]
A. for
B. to
C. in
想一想，选一选。
1. 当你告诉别人你是一名学生时，你应说：[ ]
A. I am a student.
B. I am a teacher.
C. You are a student.
2. 你想介绍“这是我的老师”时，你应说：[ ]
A. This is my teacher.
C. You are a teacher.
3. 当你想说“我有一把雨伞”时，你应说：[ ]
A. I have an umbrella.
B. I have a umbrella.
C. I has an umbrella.
