第4题: [单项选择]接触铬酸盐工人易患的职业肿瘤是( ) A. 皮肤癌 B. 肺癌 C. 肝血管肿瘤 D. 白血病 参考答案:B 答案解析:[解析] 铬酸盐制造业致肺癌。
第5题: [单项选择]He ______ the memory of his dead wife though she has passed away for about ten years. A. cherishes B. haunts C. persists D. insists 参考答案:A 答案解析:[解析] 动词辨义。这四个选项的词性都是动词,cherish表示“怀念;怀有(感情);抱有(希望)”,如:“He cherished the memory of his departed youth.