第15题: [单项选择]抑制胃蛋白酶的活性 A. PPI类 B. 枸橼酸铋剂 C. 阿莫西林和甲硝唑 D. 前列腺素E2 E. 吗丁啉 参考答案:D 答案解析:前列腺素E2具有促进胃黏膜上皮细胞分泌黏液与碳酸氢根,增进胃黏膜血流,抑制胃酸与胃蛋白酶分泌,加强细胞膜的稳定性,促进黏膜细胞再生等作用。
第16题: [单项选择]A person can be more lonely among men than by himself at home because______. A. loneliness is a state of mind B. loneliness is not the same as being alone C. solitude is not measured in miles D. all of the above 参考答案:D 答案解析:[详解] 认真审题,会发现前三个选项A、B、C都是对的,因此可选D项,既“以上都对”。
第17题: [填空题]Which bus can I take Which bus ________________________