.Tom is one of those students who ------ friendly :however,i

选B
those students 做先行词,复数,谓语也要复数,排除AC
Tom is one of those students who are appeared to be friendly :however,it is very hard to get along with him
汤姆是那些看起来很友好但是实际上却很难相处的一类人中的之一.
再问： 如果再加一个选项D appear to be 那么选哪个
再答： 那更好, 就选D了 这里其实用被动不合适...但是AC更不合适..有D的话就选D