第17题: [单项选择]The principal intention of the author of a dime novel was to ______. A. explore a segment of American society B. promote the American political philosophy C. raise the level of intelligence of the great masses of people D. make money 参考答案:D 答案解析:从文中"designed t0 fill the pockets of both author and publisher"可知D为正确答案。
第19题: [单项选择]Sometimes very young children have trouble ______ fact from fiction and may believe that such things actually exist. A. separating B. having separated C. to separate D. for separating 参考答案:A 答案解析:“have trouble (difficulty,a problem) in doing sth.”结构中,in经常可以省略,意思是“做某事有麻烦(困难,问题)”。
第20题: [单项选择]再生障碍性贫血最主要的诊断依据是() A. 全血细胞减少,有出血或感染表现 B. 网织红细胞减少 C. 骨髓增生不良 D. 肝脾淋巴结不肿大 E. 铁剂、叶酸治疗无效 参考答案:C 答案解析:再生障碍性贫血是一种骨髓造血功能衰竭症,主要表现为骨髓造血功能低下、全血细胞减少和贫血、出血、感染症候群。临床上主要根据骨髓穿刺及骨髓活检查用于确诊再障。
第26题: [单项选择]洛伐他汀属于() A. 苯氧芳酸类药物 B. 胆汁酸结合剂 C. 不饱和脂肪酸类 D. 抗氧化剂 E. HMG-CoA还原酶抑制剂 参考答案:E 答案解析:本题考查调血脂药的分类。洛伐他汀属于羟甲基戊二酰辅酶A(HMG-CoA)还原酶抑制剂类调血脂药,其与羟甲基戊二酰辅酶A的结构相似,且对羟甲基戊二酰辅酶A还原酶(HMG-CoA还原酶)的亲和力更大,对该