题目

How many people will visit New York for free?A. 2. B. 3. C. 5. 答案：【答案】C【解析】W: I’m so excited. M: any good news?W: Jimmy and I got the chance to visit New York with another three people for free.一张长方形纸板长12厘米，宽8厘米，在这张长方形纸板中剪一个最大的圆，这个圆的半径是（　　）厘米．A.8 B.12 C.6 D.4