题干

从静脉注射的葡萄糖流经心脏各腔的先后顺序是(  )

A:左心房→左心室→右心房→右心室

B:左心室→左心房→右心室→右心房

C:右心房→右心室→左心房→左心室

D:右心室→右心房→左心室→左心房

上一题 下一题 0.0难度 选择题 更新时间:2019-09-24 11:25:25

答案(点此获取答案解析)

C

同类题2

阅读下文,回答相关问题。

                                                                                                                                         谈“自省”
        ①古希腊哲学家伊壁鸠鲁有一句名言:“认识错误是拯救自己的第一步。”古罗马哲人塞涅卡对它的解读是:一个人要是尚未认识到自己在做错事,他是不会有改正错误的愿望的;在改正错误以前,你得发现和承认自己犯了错误。惟有如此,及时反省,我们才能将自己从过失和失败中拯救出来。我国古代的思想家曾子也说“吾日三省吾身”。看来,这些先哲们早已将自省当作一种自觉的行为了,他们所推崇的“自省意识”,千百年来一直作为精神财富施惠于人类。
        ②可是,在这个日渐浮躁的时代,我们面临着这样的尴尬:一方面是物质生活的高度富裕,另一方面却是精神世界的极度贫穷——自省意识的缺失便是明证。【甲】每当我们惹了麻烦,做了错事,伤害了他人,我们首先想到的不是主动承认错误而是如何逃避责任;每当我们遇到考试失利,求职碰壁,壮志难酬等困境时,我们最先想到的不是自身努力的不足,实力的欠缺,能力的差距,而是习惯在悲伤、沮丧、悒郁、愤懑的同时,将自身的过失和失利的原因归咎于他人的干预和外在的环境,却缺乏对自身灵魂的拷问,缺乏深沉的自省。于是,我们对心灵的防护能力和对神经的调控能力,越来越差,陷于困境的我们往往要在痛苦的深渊里艰难地挣扎,却难以及时觅到逃离苦难的出口和冲击成功的出路。
        ③缺乏自省可怕,不正确的自省同样可怕。有些人一旦陷于失败或遭受打击,惟有自怨自艾,强吞下失利的苦果,从此一蹶不振。还有些人又走到了另一个极端,将自省意识等同于严苛的自责,他们对自己求全责备,这只能助长自卑的心理,不仅于事无补,还会加深内心的苦痛。
     ④自省既不等同于自怨自艾,也不是求全责备,它是精神层面上的反省,是对灵魂的追问。【乙】自省的前提是承认过失,即知其“失”,同时要知其所以“失”,进而在行动中纠其“失”。自省不是外在的强加,而应该像吃饭睡觉那样成为我们自觉的行为。
       ⑤具备了自省精神的人和民族注定是强大的、不可战胜的。
                                                                                                                                                                                                                   ——选自《中华活页文选》

同类题4

阅读理解

    Banks view online banking as a powerful “value-added” tool to attractand keep new customers while helping to eliminate costly paper handling or teller(出纳员)interactions in an increasingly competitive banking environment.

    Today, most large national banks, many local banks and credit unions offer some form of online banking, variously known as PC banking, home banking, electronic banking or Internet banking. Online banks are sometimes referred to as “brick-to-click”banks, both to tell them from “brick-to-mortar” banks that haven't yet offered online banking, as well as from “virtual”(虚拟)banks that have no physical branches or tellers whatsoever.

    The challenge for the banking industry has been to design this new service channel in such a way that its customers will readily learn to use and trust it. Most of the large banks can now offer fully safe , fully functional(功能的)online banking for free or for a small cost. As more banks succeed online and more customers use their sites, fully functional online banking will likely become as common place as automated teller machines (ATM).

    Online banking has a lot of advantages. Unlike your corner bank, online banking sitesnever close; they're at hand 24 hours a day, seven days a week and they're amouse click away. If you're out of state or even out of the country when a money problem appears, you can log on instantly to your online bank and take care of business. Online bank sites generally carry out and confirm deals at or quicker than ATM processing speeds. Many online banking sites now offer fashionable tools to help you manage all of your valuable items more effectively.