A. os.copy("c:\\test.txt","d:\\test.bak") B. shutil.copy("c:\\test.txt","d:\\test.bak") C. os.cp("c:\\test.txt","d:\\test.bak") D. shutil.cp("c:\\test.txt","d:\\test.bak")
A. write() B. append() C. writeline() D. insert()
A. read() B. readline() C. readlines() D. readbyte()
A. tell() B. seek() C. locate() D. find()
A. 不用 B. 一定要 C. 最后要 D. 用完,就要