第4题: [单项选择]According to the passage, diesel-towed barges differ from deep-water vessels in that they ______. A. are less restricted in operation B. are larger shipments C. are less flexible D. are most flexible 参考答案:A 答案解析:做这道题时要注意几个选项之间的细微差别。根据文章第4段第2句:Deep-water vessels are restricted in operation, but diesel towed barg
第6题: [单项选择]治疗痛风的药物中,能抑制尿酸合成的是 A. 秋水仙碱 B. 别嘌呤醇 C. 糖皮质激素 D. 布洛芬 E. 丙磺舒 参考答案:B 答案解析:别嘌呤醇能抑制尿酸合成,每次100mg,每日2~4次,最大剂量600mg/d,待血尿酸下降,可减量至最小剂量或应用别嘌呤醇缓释片250mg/d,与排尿酸药合用效果更好。