[多选题]Theresearchproposalcan__________. A A.clearly and systematically present the research problem and objective B B.indicate the significance and introduce the specific methodology and research proceduressynthesize current knowledge, seek gaps and formulate a plan to address the problem C C.synthesize current knowledge, seek gaps and formulate a plan to address the problem D D.provide a timetable for the study and a budget of the investigation or experiments