问题补充:
单选题Itshardtotrack__________bluewhaleinthatocean,whichhasbeenkilledoffbycommercialwhalingandisnowlistedas__________endangeredspecies.A.the; theB.the; 不填C.a; 不填D.the ; an
答案:
D
时间:2021-11-06 14:54:41
单选题Itshardtotrack__________bluewhaleinthatocean,whichhasbeenkilledoffbycommercialwhalingandisnowlistedas__________endangeredspecies.A.the; theB.the; 不填C.a; 不填D.the ; an
D