问题补充:
单选题Lastmonth,Americanscientistsstartedworkingon_____projectaimedatimproving_______abilitytopredictearthquake.A.the; aB.a; anC.the; anD.a; the
答案:
D
时间:2021-10-04 11:15:12
单选题Lastmonth,Americanscientistsstartedworkingon_____projectaimedatimproving_______abilitytopredictearthquake.A.the; aB.a; anC.the; anD.a; the
D