第17题: [单项选择]What can be predicted from the last paragraph A. Newspapers are now operating their own websites. B. Websites begin to involve in the traditional newspaper business. C. Competition on ads will be tighter in the future. D. Newspapers might also provide free ads service. 参考答案:C 答案解析:[解析] 推理判断题。末段首句指出:相应地,许多印刷出版商也在进行网络扩张。接下来举例说明他们的反击方法;默多克先生购买网站。报纸集团联合起来经营网站等,由此可见,对于广告的竞争会越来越激烈,故[C]
第23题: [单项选择]关于异位妊娠的描述,以下错误的是() A. 有一少部分患者无明显停经史 B. 输卵管妊娠占95%左右 C. 阔韧带妊娠也属于异位妊娠 D. 血β-HCG滴度一般比正常宫内妊娠高 E. 常出现腹痛 参考答案:D 答案解析:受精卵在子宫腔以外着床称为异位妊娠。典型的临床表现为停经、腹痛及不规则阴道流血,但约有25%患者无明显停经史。胚胎存活或滋养细胞尚有活力时,β-HCG呈阳性,但异位妊娠时往往低于正常宫内妊娠。