第22题: [单项选择]下列关于急性化脓性腹膜炎的叙述，错误的是（） A. 壁腹膜受刺激时，痛觉敏感，定位准确，可引起放射性肌紧张 B. 脏腹膜受刺激时，痛觉定位差常表现为腹部钝性疼痛 C. 腹膜炎主要病因有阑尾穿孔，胃十二指肠溃疡穿孔 D. 化脓性腹膜炎一般都有混合感染，故毒性较剧 E. 大量毒素吸收是腹膜炎造成血容量明显减少的唯一因素 参考答案:E 答案解析:急性化脓性腹膜炎按发病机制分为原发性腹膜炎和继发性腹膜炎。原发性腹膜炎（又称为自发性腹膜炎），腹腔内无原发性病灶。致病菌多为溶血性链球菌、肺炎双球菌或大肠杆菌。继发性腹膜炎是最常见的腹膜炎，腹腔内空腔
第23题: [多项选择]Which two benefits does VoFR provide？ （） A. bandwidth efficiency B. cell-switching C. congestion notification D. heterogeneous network 参考答案:A,C
Personal credit cards are becoming more common in China．Banks and other financial institutions are encouraging their customers to change the way they buy things．Credit cards，otherwise known as“plastic money”，are being offered on very good terms to encourage the change．Consumers will be able to“buy now，pay later”，and many see this as an advantage． But people need to be careful．There are dangers associated with credit cards．Some people find it very easy to exceed their budget．They are tempted to purchase goods that they do not really need，and can become quickly overburdened by debt．The credit cards often charge a high rate of interest，which exacerbates the problems for these people． However，in my opinion，used wisely credit cards can improve the quality of people’s lives．They can give people access to money to meet sudden unplanned expenses．Properly handled，they can let people control their expenditure and the monthly statements provide a record of where their money has gone．
