第19题: [单项选择]Why were these Chinese sorely needed at this time A. The work was strenuous. B. The work was dangerous. C. The railroad company couldn’ t find other laborers for the job. D. All of the above. 参考答案:D 答案解析:原文中有"They were sorely needed because the work was so strenuous and dangerous,and it was carried on i
第24题: [单项选择]下列情况禁用诊断性腹腔穿刺术的是() A. 小儿及老人 B. 精神状态不正常者 C. 严重腹胀者 D. 昏迷者 E. 病史不清者 参考答案:C 答案解析:腹腔穿刺的禁忌证包括:严重腹内胀气者;中、晚期妊娠;既往有腹部手术或炎症史者;躁动不安不能合作者。小儿及老人、精神状态不正常者、昏迷者、病史不清者都不是腹腔穿刺的禁忌证。故选C。