第18题: [单项选择]We had to ______ a lot of noise when the children were at home. A. go in for B. hold on to C. put up with D. keep pace with 参考答案:C 答案解析:[解析] A项go in for意为“从事于,酷爱,参加”;B项hold on to意为“抓住……不放,坚持”;C项put up with“忍受,容忍”;D项keep pace with意为“跟上,和
第21题: [单项选择]下列有关二巯基丙醇的说法不正确的是 A. 能夺取已与酶系统结合的金属,形成不易解离的无毒性络合物而由尿排出,恢复巯基酶活性,解除金属引起的中毒症状 B. 治疗慢性汞中毒疗效较好 C. 对砷、汞及金的中毒有解救作用 D. 有收缩小动脉作用,可使血压上升,心跳加快 E. 碱化尿液可以减少络合物的解离而减轻肾损害 参考答案:B