三、英文短文寫作。（45 分）    American civil rights activist, W.
(E) B. Du Bois, once said, “The problem of thetwentieth century is the problem of the color line: the relation of the darker to thelighter races of men in Asia and Africa, in America and the islands of the sea.” The“color line” here refers to the racial segregation that existed in the United States afterthe abolition of slavery. In your opinion, what is it that segregates people in theworld in the 21st century? How does it divide, discriminate and alienate people? Is itpossible to spot a silver lining in this segregation? If so, what can be done? Expressyour ideas by using a real case and write an essay of no more than 350 words withan introductory paragraph, a main body containing 3 to 5 major points and aconclusion.