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问题 单项选择题 A3/A4型题

患者，女性，21岁，诉咀嚼无力，牙松动。口腔检查见CI-S：1、4颗第一恒磨牙牙周袋深约6mm，松动Ⅱ度，上前牙呈扇形排列。 该病的主要致病菌为（）

A.牙龈卟啉单胞菌

B.中间普氏菌

C.伴放线放线杆菌

D.福赛坦菌

E.具核梭杆菌

答案

参考答案：C

选择题

下列仪器不能用酒精灯直接加热的是

　　①烧杯　②坩埚　③蒸发皿　④试管　⑤蒸馏烧瓶　⑥锥形瓶　⑦燃烧匙

A．③⑥⑦

B．①⑤⑥

C．①⑤

D．⑤⑥⑦
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单项选择题

Christine Dobbs is watching a public affairs television program on which one of the participants makes the following Statements: Statement 1: A common resource is an obstacle to the efficient allocation of resources unless it generates external benefits. Statement 2: The idea of utilitarianism suggests that market allocation of resources does not maximize the value of an economy to all individuals. However, achieving the results that utilitarianism regards as optimal involves a loss of economic output. Should Dobbs agree or disagree with these statements Statement 1Statement 2（） ①A. Disagree Agree ②B. Agree Agree ③C. Agree Disagree

A. ①

B. ②

C. ③
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