托福阅读句子简化题范例4

　　托福阅读题型中句子简化题的解题思想是要：1. 逻辑关系正确：把握逻辑类型，检验逻辑连接对象，认清逻辑位置关系。小编为大家带来托福阅读句子简化题范例，希望对大家托福备考有所帮助。

　　有逻辑的句子简化题例题4：Because the Underground Railroad was so secret, few records exist that would reveal the true number of people who traveled it to freedom.

　　Which sentence below best expresses the essential information in the highlighted sentence in paragraph 1?

　　The Underground Railroad kept secret records in which all of the passengers and trips were documented.

　　Few people understood why the Underground Railroad would not reveal how many people chose to travel in this way.

　　The Underground Railroad’s records were not accurate, so the true number of travelers is difficult to estimate.

　　We do not know exactly how many slaves escaped on the Underground Railroad because it was a secret organization.