读数值为0.1mm，0.05mm和0.02mm的游标卡尺可分别用来进行不同精度的测量。( )
参考答案：对
补全对话
I. A: Hello! What’s your name?
B: My__小题1:__ _ Jack Green.
A:小题2:______ Lucy Smiths.小题3:_____ are you?
B: I’m fine, thanks. And you?
A: I’m fine too. And this is my sister, Lily.
B:小题4:____ to meet you
A: Nice to meet you,小题5:_____
正多面体有几种（）
A、二
B、三
C、四
D、五
