第24题: [单项选择]可自行消退的肿瘤是()。 A. 畸胎瘤 B. 神经母细胞瘤 C. 子宫平滑肌瘤 D. 骨肉瘤 E. 结肠腺癌 参考答案:B 答案解析:有些肿瘤,由于宿主免疫功能增强,偶可自发消退。最常见的可自行消退的恶性肿瘤有四种:肾癌、神经母细胞瘤、恶性黑色素瘤、绒癌。
第25题: [单项选择]Many people felt great sorrow when they heard that the brilliant young actor ______ a heart attack at the age of 25. A. died from B. died of C. died for D. died to 参考答案:B 答案解析:[解析] 本题考查动词短语的用法。die from意为“(病以外)因某事而死”;die of意为“因某病而死”;die for意为“为了……而死”。根据题意应选B。 [译文] 当听说这个