问题补充:
单选题Theprofessor’sresearchfinallyprovedtobe______,thoughhehadspentalotofmoneyonit.A.pricelessB.valuableC.worthlessD.worthwhile
答案:
C
时间:2019-02-07 23:35:23
单选题Theprofessor’sresearchfinallyprovedtobe______,thoughhehadspentalotofmoneyonit.A.pricelessB.valuableC.worthlessD.worthwhile
C