A research paper is fact and nothing but the fact. A research paper is just giving information about a topic. However, rhetorical questions are used to persuade the reader to believe or agree with something, mainly in a discursive essay; but in a research paper, you aren't persuading, you are educating.
The abbreviations for the following are:CIA, USPS, DHS
Well, it depends on what you're looking for but .gov and .edu websites are credible.
.org websites can be of good use too, but not all of them are credible
Postponing the Games until 2021 risks scheduling clashes with the world championship events of two of the biggest Olympic sports, track and field and swimming. Though officials did not specify new dates for the Tokyo Games, they were originally planned for July 24 to Aug. 9, so a shift of exactly 12 months would create certain conflict, absent more maneuvering.