THE WORD " THEY " IN LINE 22 REFERS TO A.YEARS B.CLIMAT...

câu 43: - DE THI THU DAI HOC MON TIENG ANH VA DAP AN
Tiếng Anh DE THI THU DAI HOC MON TIENG ANH VA DAP AN
Câu 43: The word " they " in line 22 refers to A.years B.climates C.sediments D.cores