A picture suitable for the signature of the tutor.
class:/my poco/my photo/200908 1 1/ 13/53258407200908 1 1300 15308267486369。 200908 1 1/ 13/53258407200908 1 1300 153082674863369 _ 000 _ 640 . jpg/my poco/my photo/200908 1 65438533733 19200908 1 1 164206086 _ 640 . jpg/my poco/my photo/200908 1 1/ 16/5337333 19200908 165438