第15题: [单项选择]消化性溃疡在活动期最佳的治疗方案是 A. 手术治疗 B. 质子泵抑制剂 C. 胃黏膜保护剂加铋剂 D. 胃黏膜保护剂加抗生素 E. 质子泵抑制剂加抗生素加铋剂 参考答案:E 答案解析:[解析] 近年来认为,幽门螺杆菌感染为消化性溃疡的重要原因,如病人存在幽门螺杆菌感染,应联合给予抗幽门螺杆菌治疗。
第18题: [单项选择]The child was sorry ______ his mother when he arrived at the station. A. to miss B. having missed C. missing D. to have missed 参考答案:D 答案解析:本题为语法结构题。动词不定式的一般式通常表示动作在谓语动词之后发生,而完成式表示动作在谓语动作之前发生。根据句意,应选D。本句大意为:那小孩到车站时妈妈已经走了,他非常难过。
A. I was of his B. I was of him C. I did of him D. I did of his 参考答案:A 答案解析:指代呼应。as…as表示“和……一样”,所以空格部分的内容是I was aware of his presence,其中aware和presence省略,故正确答案为A。