第23题: [单项选择]Americans eat ______ as they actually need every day. A. twice as much protein B. twice protein as much twice C. twice protein as much D. protein as twice much 参考答案:A 答案解析:[解析] 此题考查比较级的倍数表示方法。much修饰名词.应放在protein之前,twice表示倍数,修饰as much protein as,也应前置。
第27题: [单项选择]关于高血压脑病的特征,下列哪项是错误的 A. 可发生于急性高血压病 B. 可发生于妊娠中毒症 C. 临床表现主要为颅内压升高所致 D. 发生时常伴有血压突然升高 E. 大多有急性肺水肿表现 参考答案:E 答案解析:[解析] 高血压脑病是指在血压突然或短期内明显升高,同时出现中枢神经系统功能障碍。其机制可能为过高的血压突破脑血管的自身调节机制,导致脑灌注过多,液体经血脑屏障漏出到血管周围脑组织造成脑水肿,颅内压增