Part or all of the following sentence isunderlined; beneath the sentence are five waysof phrasing the underlined material. Select theoption that produces the best sentence. If youthink the original phrasing produces a bettersentence than any of the alternatives, select choice A.

　　Woody Guthrie wrote and adapted more than a thousand songs, many of them are about thestruggles of workers and the poor in the United States.

　　(A) many of them are

　　(B) many of which are

　　(C) many are

　　(D) which are, many of them,

　　(E) and many of them that are

　　答案：B

　　解析：

　　Choice (B) is correct. It avoids the comma-spliceerror of the original by using the pronoun "which" inplace of the pronoun "them," thereby turning whatwas originally an independent clause ("many ofthem are … United States") into a relative clause that modifies "songs."