Generally a/an ( ) is composed after your research paper is finished and placed before the main text if you want to publish it in an academic journal or present it in a conference.
A.abstract B.acknowledgement C.appendix D.references正确答案A
Generally a/an ( ) is composed after your research paper is finished and placed before the main text if you want to publish it in an academic journal or present it in a conference.
A.abstract B.acknowledgement C.appendix D.references正确答案A