The tourists replaced batsman Usman Khawaja and injured paceman Josh Hazlewood with batting all-rounder Hilton Cartwright and Steve O'Keefe, who joins fellow left-arm spinner Ashton Agar and off-spinner Nathan Lyon in the slow bowling department.
"The wicket looks dry... hopefully we can put up a good score in the first innings," Rahim said, adding the hosts were done celebrating their victory in Dhaka.
"It's in the past and this is a new game, a fresh game. The boys need to do it again and it's a great opportunity to play with probably the best team."
Bangladesh picked an extra batsman in Mominul Haque who replaces paceman Shafiul Islam.
Australia captain Steve Smith admitted he, too, would have preferred to bat.
"We have to try and restrict them as much as we can and then bat well... something we did not do well in the last game, something we want to rectify," Smith said.
"We got to work on our lengths and obviously first innings runs are important as well."
Teams:
Bangladesh - Tamim Iqbal, Soumya Sarkar, Imrul Kayes, Mominul Haque, Mushfiqur Rahim (wicketkeeper-captain), Shakib Al Hasan, Sabbir Rahman, Nasir Hossain, Mehidy Hasan, Taijiul Islam, Mustafizur Rahman
Australia - David Warner, Matt Renshaw, Steve Smith (captain), Peter Handscomb, Glenn Maxwell, Hilton Cartwright, Matthew Wade, Ashton Agar, Pat Cummins, Steve O'Keefe, Nathan Lyon
(Reporting by Amlan Chakraborty in New delhi; editing by Sudipto Ganguly / Ian Ransom)
