问题 单项选择题

可直接导致意识障碍的心律失常是

A.房性早搏

B.室性早搏

C.心室颤动

D.右束支阻滞

E.窦性心动过速

答案

参考答案:C

解析:意识障碍是中枢神经系统受损的结果,其病因除中枢神经系统本身的疾患外.全身l生原因包括代谢性脑病(低血糖、糖尿病高渗昏迷、安眠药中毒等)和缺血缺氧性脑病(心律失常、急性大量失血、休克、窒息、中毒、麻醉和呼吸肌麻痹等)。本题提出的五种心律失常。只有心室颤动可引起严重缺血缺氧性脑病,直接导致意识障碍。

单项选择题

Passage Three

The age at which young children begin to make moral discriminations about harmful actions committed against themselves or others has been the focus of recent research into the moral development of children. Until recently, child psychologists supported pioneer developmentalist Jean Piaget in his hypothesis that because of their immaturity, children under age seven do not take into account the intentions of a person committing accidental or deliberate harm, but rather simply assign punishment for transgressions on the basis of the magnitude of the negative consequences causeD. According to Piaget, children under age seven occupy the first stage of moral development, which is characterized by moral absolutism (rules made by authorities must be obeyed) and imminent justice (if rules are broken, punishment will be meted out). Until young children mature, their moral judgments are based entirely on the effect rather than the cause of a transgression. However, in recent research, Keasey found that six-year-old children not only distinguish between accidental and intentional harm, but also judge intentional harm as naughtier, regardless of the amount of damage produced. Both of these findings seem to indicate that children, at an earlier age than Piaget claimed, advance into the second stage of moral development, moral autonomy, in which they accept social rules but view them as more arbitrary than do children in the first stage.

Keasey’s research raises two key questions for developmental psychologists about children under age seven: do they recognize justifications for harmful actions, and do they make distinctions between harmfulacts that are preventable and those acts that have unforeseen harmful consequences Studies indicate that justifications excusing harmful actions might include public duty, serf-defense, and provocation. For example, Nesdale and Rule concluded that children were capable of considering whether or not an aggressor’s action was justified by public duty: five year olds reacted very differently to "Bonnie wrecks Arm’s pretend house" depending on whether Bonnie did it "so somebody won’t fall over it" or because Bonnie wanted "to make Ann feel bad". Thus, a child of five begins to understand that certain harmful actions, though intentional, can be justified; the constraints of moral absolutism no longer solely guide their judgments.

Psychologists have determined that during kindergarten children learn to make subtle distinctions involving harm. Darley observed that among acts involving unintentional harm, six-year-old children just entering kindergarten could not differentiate between foreseeable, and thus preventable, harm and unforeseeable harm for which the perpetrator cannot be blamed. Seven months later, however, Darley found that these same children could make both distinctions, thus demonstrating that they had become morally autonomous.

According to the passage, Keasey’s findings support which of the following conclusions about six-year-old children ?()

A.They have the ability to make autonomous moral judgments.

B.They regard moral absolutism as a threat to their moral autonomy.

C.They do not understand the concept of public duty.

D.They accept moral judgments made by their peers more easily than do older children.

问答题 论述题