A.To correct a common misunderstanding about grasshoppers. B.To help explain how well grasshoppers can jump. C.To compare the size of grasshopper with that of other insects. D.To show how quickly grasshoppers respond to danger.
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【简答题】以下对于字符串的相关操作,正确的输出结果是哪些选项?A. >>> 'Life is short, you need Python.'.find('you')15B. >>> seq = [1, 2, 3, 4]; >>> sep = '+'; >>> sep.join(seq)'1+2+3+4'C. >>> print('{:5.3f}'.format(math.pi))3.1416D. >>> ...