答案是B a) 关系代词ho的用法 i. ho 的前行词必须是人,在从句中可以担任主语,往往也可以代替在从句中担任宾 语的hom,它前边不能有介词,如果带了介词就必须用宾格的hom: (介词+hom) This is the teacher ho teaches us mathematics. She is the girl ho (hom) I met at the party. (可以替代) She is the girl hom (ho) I ent there ith. (可以替代) She is the girl ith hom I ent there. (不可替代) ii. ho,that在很多情况下可以通用,有些情况只能用ho: 1. 先行词是one, ones, anyone的时候宜用ho. One ho has nothing to fear for oneself dares to tell the truth. The ones ho flatter me don7a64e59b9ee7ad9431333233656466t please me. Dont tell anyone about the nes ho oughtnt to kno it. Anyone ho fails to finish the task given should be criticized. 2. 先行词为those的时候,宜用ho为关系代词 Those ho ere not fit for their ork could not see the beautiful clothes made of the magic cloth. Those ho ant to go to the Great Wall sign up here. 3. 当先行词有比较长的后置定语的时候 I met a foreigner in the street yesterday ho could asked me questions in Chinese. 4. 一个句子中带有两个定语从句,其中一个定语从句的关系代词为that,另一个则用 ho. The boy that you met last night is the group leader ho studies very hard. 5. 在there be 开头的句子中 There is an old man ho ants to see you. There are many young men ho are against him. 关系代词hich的用法 在非限定性定语从句中,只宜用hich, 不宜用that. Beijing, hich is the capital of China, is a very beautiful city. 在限定性定语从句中hich和that在指代物的时候常常可以通用,有时只宜用hich 而不用that i. 关系代词前面有介词的时候 This is the hotel in hich you ill stay. ii. 如果有两个定语从句,其中的一句的关系词是that, 另一句宜用hich. Let me sho you the novel that I borroed from the library hich as nely open to us. 3. 关系代词与介词,关系代词的省略 a) 关系代词和介词 介词放在关系代词的前面时,介词短语只能用hich代物,和用hom代人 This is the hero of hom e are proud. I ant to find the very pen ith hich I rote that letter. 当介词放在句子的末尾时,可用that/hich代物,that/hom/ho来作为介词的宾语, 且这个做介词宾语的关系代词往往忽略 This is the hero that (ho/hom/忽略) e are proud of.参考资料http://.cyc./cms/2004/englishcorner/yufaz/t20040820这是一个非限制性定语从句,排除that,根据句意,用hich指代前面一句的内容。hich在这里指代的是前面一句话所说的内容。