相关Itisthoughtthatonebi的文学知识

问题详情： ItisthoughtthatonebillionpeopleItheworld,   ishalftheword’sworkers,earntheirlivingbyfarming.A.if   B.that   C.which  D.what【回答】B。句中“halftheworld’sworkers”是对“onebilli...