19世纪70年代初，人类历史中第一个无产阶级 * * 的诞生，它为无产阶级提供宝贵的经

30岁已婚妇女，曾流产2次。现停经60天， * * 少许流血伴轻微下腹痛2天。入院后检查：患者情绪激动，焦虑不安。查体： * * 有少许血性分泌物，宫颈口未开，子宫大如孕2个月。首先考虑的诊断是（）。

A.先兆流产

B.难免流产

C.稽留流产

D.感染性流产

E.习惯性流产

麻醉维持期的通气方式（）。

A.只能是控制呼吸

B.可以是自主的、辅助的和控制性呼吸

C.只能是喉罩或气管插管控制呼吸

D.术前应用抗酸药可以长时间面罩通气

E.对于有自主呼吸的肥胖病人可以放置口咽通气管优于放置喉罩

设备检修有哪些要求？

患者，男性，31岁，寒战、发热3天入院。有疖肿挤脓史。体温39.5℃，白细胞25.5×10⁹/L，中性粒细胞88%，入院后先给予苯唑西林6g．静脉点滴，每天1次。3天后体温无下降趋势。血培养报告苯唑西林敏感金黄色葡萄球菌生长。将苯唑西林改为2g静滴q6h，7天后体温正常，症状消失。

根据病史经验选择抗菌药（）

A.青霉素

B.红霉素

C.亚胺培南

D.头孢噻肟

E.苯唑西林

Government officials reported three new cases of mad cow, bringing the total so far this year to 99. Last year, France recorded just 31 cases of the mad cow disease. The rising numbers are in part (1) a new testing program that focuses on cows that are most (2) . That program has (3) 39 cases. But still 60 new cases were identified in the usual way, (4) were found in 1999. Many scientists (5) that this year, five years after safety precautions were (6) , the number of cases would be (7) .

The rise in cases has (8) some scientists to question whether the disease can be transmitted in ways not yet understood. Scientists are still (9) the disease, first recognized in cows in 1986.

It appears that it is not caused by a bacteria, virus or fungus, but (10) infectious particles called prion, perhaps (11) a virus or other agent. The disease kills cells in the brain, (12) it spongy and full of holes.

France has taken more steps to (13) safety than most European countries, (14) refusing to take English beef (15) the European Union. But some scientists believe that France has not been (16) in imposing the ban on feed that (17) animal pans.

Some French officials hope that the sudden interest in mad cow disease will mean that French consumers will become educated about it, thereby recognizing that French beef is actually (18) controlled. Every cow is given a passport at birth, and extensive information about its parentage and (19) it was raised must be (20) to any slaughterhouse. When a diseased animal is found, the entire herd is destroyed.

17（）

A. contains

B. consists of

C. is made from

D. is made up of