第29题: [单项选择]Call your doctor for advice if the ______ persist for more than a few days. A. responses B. signals C. symptoms D. reflections 参考答案:C 答案解析:symptom意为“症状;征兆,征候”,例如:The first symptom of true love in a man is timidity in a girl it is boldness.
第30题: [单项选择]商业资本所执行的职能是() A. 购买生产资料和劳动力 B. 生产出剩余价值 C. 销售商品,实现价值和剩余价 D. 贷出货币,投入生产和流通中 参考答案:C