为了较准确地测量铜线的直径，采用如下图的方法测量。该铜线的直径是_________毫米。
1.7
唐朝与清朝实行了相反的对外政策，各是怎样的政策？请你结合所学知识谈谈这两种政策的不同影响。
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--Excuse me，could you tell me ______，please?
--Sure. There is a library on Bridge Street.
A．where can I see a movie
B．where can 1 borrow some magazines
C．where 1 can send a postcard
D．where I can borrow some books
