细节题是 GMAT 阅读中的常考题型，我们在阅读中常见这种问法：
According to the passage, XXX
Which of the following best describe XXX
The author mentions … as …
When Jamaican-born social activist Marcus Garvey came to the United States in 1916, he arrived at precisely the right historical moment. What made the moment right was the return of African American soldiers from the First World War in 1918, which created an ideal constituency for someone with Garvey’s message of unity, pride, and improved conditions for African American communities.
Hoping to participate in the traditional American ethos of individual success, many African American people entered the armed forces with enthusiasm, only to find themselves segregated from white troops and subjected to numerous indignities. They returned to a United States that was as segregated as it had been before the war …
Some scholars have argued that Garvey created the consciousness from which he built, in the 1920s, the largest revitalization movement in African American history. But such an argument only tends to obscure the consciousness of identity, strength, and sense of history that already existed in the African American community …
问题： According to the passage, many African American people joined the armed forces during the First World War for which of the following reasons?
A. They wished to escape worsening economic conditions in African American communities.B. They expected to fulfill ideals of personal attainment.C. They sought to express their loyalty to the United States.D. They hoped that joining the military would help advance the cause of desegregation.E. They saw military service as an opportunity to fulfill Marcus Garvey’s political vision.
第 1 步：
读题干，按要求定位原文。原文先在第 1 段尾句介绍了黑人士兵从一战战场归来的现象，第 2 段首句(划线部分)承接上一句内容，提到了 many African American people(许多美国黑人)entered the armed forces(参军，即在一战中参军的事实)。
其中，Hoping to 为现在分词作状语，表示黑人参军的原因和目的，所以第 2 段划线部分是定位部分。
第 2 步：
收敛思维，对比选项。A选项说的是，黑人希望逃离糟糕的经济困境，与原文不符;B 选项：希望实现个人的成就;C 选项：希望表达对美国的忠诚;D 选项：希望通过参军推进解除种族隔离的事业;E 选项：他们认为服兵役是实现 G 政治愿景的机会。
其中， ACD 选项在原文未提及，BE 在原文中有所提及。
第 3 步：
找出与定位内容语义相同或相近的选项，只有 B 选项符合题意。