单选题 .  The United States is a country made up of many different races. Usually they are mixed together and can't be told one from another. But many of them still talk about where their ancestors came from. It is something they are proud of.
    The original Americans, of course, were the Indians. The so-called white men who then came were mostly from England. But many came from other countries like Germany and France.
    One problem the United States has always had is discrimination. As new groups came to the United States they found they were discriminated against. First it was the Irish and Italians. Later it was the blacks. Almost every group has been able to eventually escape this discrimination. The only immigrants who have not are the blacks. Surprisingly enough the worst discrimination today is shown towards the Indians.
    One reason the Indians are discriminated against is that they have tried so hard to keep their identity. Of course they are not the only ones who have done so. The Japanese have their Little Tokyo in Los Angeles and the Chinese a Chinatown in New York. The Dutch settlement in Pennsylvania also stays separate from other people. Their towns are like something from the 19th century. They have a different reason than the other groups for staying apart. They live separately for religious reasons rather than keeping together in a racial group.
    Although some groups have kept themselves separate and others have been discriminated against, all groups have helped make the United States a great country. There is no group that has not helped in some way. And there is no group that can say they have done the most to make it a great country.
    Many people still come from other countries to help the United States grow. A good example is the American project that let a man walk on the moon. It was a scientist from Germany who was most responsible for doing that. It is certain that in the future the United States will still need the help of people from all racial groups to remain a great country.1.  Which of the following statements can best describe the main idea of this passage? ______
【正确答案】 C
【答案解析】 主旨大意题
   由文章第五段第一句“Although some groups have kept themselves separate and others have been discriminated against, all groups have helped make the United States a great country. ”可知C正确。
[参考译文]
   美国是一个由许多不同的种族构成的国家。通常他们都是混合在一起，相互之间难以区分。但是他们中有许多人仍旧谈论他们的祖先是从哪里来的，那是他们感到骄傲的事情。
   当然，最早的美国人是印第安人。后来到来的所谓的白人大部分来自英国，但是也有许多来自其他国家，如德国和法国。
   美国一直存在的一个问题是种族歧视问题。每当新的人群来到美国时，他们就会发现自己会受到歧视。首先是爱尔兰人和意大利人，后来是黑人。几乎每个种族最终都会逃脱这种歧视，唯一没能逃脱的移民是黑人。而且很令人吃惊的是现在受到最严重歧视的是印第安人。
   印第安人受歧视的一个原因就是，他们要竭尽全力保持他们的身份。当然，他们并不是唯一这么做的种族。日本人在洛杉矶有他们的小东京，中国人在纽约有唐人街。在宾夕法尼亚州的荷兰人也远离其他人，他们的城镇都像是19世纪的。与别的团体相比，他们分开居住有一个不同的理由。他们是为了宗教原因而不是要保持一个种族而在一起的。
   尽管一些群体是独立的，其他一些群体是被歧视的，但所有的群体都帮助美国成为了一个强大的国家，没有任何一个团体没有任何帮助。也没有一个团体说他们在使美国成为一个强大的国家中做得最多。
   仍然有许多来自其他国家的人在帮助美国成长。一个很好的例子就是美国的登月计划，其主要负责人是一个德国科学家。在将来，毫无疑问，美国仍将需要来自不同种族群体的帮助来使自己依然是一个强大的国家。