问题
填空题
要剪一个面积是9.42平方厘米的圆形纸片，至少需要一张______平方厘米的正方形纸片．（π取3.14）
答案
小正方形的面积（半径的平方）：9.42÷3.14=3（平方厘米），
大正方形的面积：3×4=12（平方厘米）；
答：至少需要一张12平方厘米的正方形纸片．
故答案为：12．
搜题请搜索小程序“爱下问搜题”
要剪一个面积是9.42平方厘米的圆形纸片，至少需要一张______平方厘米的正方形纸片．（π取3.14）
小正方形的面积（半径的平方）：9.42÷3.14=3（平方厘米），
大正方形的面积：3×4=12（平方厘米）；
答：至少需要一张12平方厘米的正方形纸片．
故答案为：12．
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 Proving Them Wrong! I'm John Wood, a doctor at a famous Boston hospital. During the first two years of high school, I found biology very 1_____. My report cards always said things like "must study harder" or "John shouldn't choose science2_____." It was really terrible for 3_____ who had always dreamed of becoming a doctor. I lost confidence, so I left high school at sixteen and 4_____ working at a supermarket. One evening I saw a documentary about Albert Einstein. According to the documentary, Einstein had done really 5_____ at school. I began to think that if Einstein could 6_____, then 1 may have a chance, too. I didn't want to leave my job, 7_____ I decided to go to night school to finish high school. Two years later, I went to a 8_____ university. I've often thought I should contact (联系) the 9_____ from the Einstein documentary and 10_____ him. As for the biology teacher, I might contact her, too, one day -but not to thank her!
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