题目

Mark Twain has been called the inventor of the American novel. And he surely deserves additional praise: the man who popularized the clever literary attack on racism. I say clever because anti-slavery fiction had been the important part of the literature in the years before the Civil War. H. B. Stowe’s Uncle Tom’s Cabin is only the most famous example. These early stories dealt directly with slavery. With minor exceptions, Twain planted his attacks on slavery and prejudice into tales that were on the surface about something else entirely. He drew his readers into the argument by drawing th读“黄土高原”图回答：（1）关于黄土高原的叙述，正确的是 ．A.地面崎岖不平，是个多山的高原B.地面平坦，到处是一望无际的原野C.高原上多冰川、湖泊D.世界上黄土分布最广、最厚的地方（2）关于黄土高原的形成，主要的说法是 ．A.水成说B.风水雨相说C.风成说D.冰川作用（3）造成黄土高原水土流失严重的人为原因是 ． （ ）A.地表光秃裸露，缺少植被的保护B.黄土结构疏松，许多物质易溶于水C.开垦、采矿、修路等造成的地表疏松D.降水集中在7、8月份，且多暴雨（4）图中A、B分别是黄土高原东缘和南缘的山脉，它们是：A ． B ． 图中C处是河，该河注入海．