问题补充:
单选题Astudyhasfoundthat80%ofthepeoplewho______tobeconstantlydistracted______more“workingmemory”.A.appears; haveB.appear; hasC.appears; hasD.appear; have
答案:
D解析考查主谓一致。定语从句的关系代词who指代先行词the people在句中做主语,谓语动词用复数;第二空是句子真正的谓语动词,主语是80% of the people,谓语动词用复数。