题干

如图所示,定值电阻的阻值不变,电源由两节新干电池串联而成,开关闭合后,电流表的示数为0.3A,若将电源由2节新干电池串联改为3节新干电池串联,闭合开关后,电流表的示数为____ A.

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0.45

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    It's rare that you see the words “shyness” and “leader” in the same sentence. After all, the common viewpoint is that those outgoing and sociable guys make great public speakers and excellent networkers and that those shy people are not. A survey conducted by USA Today referred to 65 percent of executives who believed shyness to be a barrier to leadership. Interestingly, the same article stresses that roughly 40 percent of leaders actually are quite shy—they're just better at adapting themselves to situational demands. Bill Gates, Warren Buffet and Charles Schwab are just a few “innies”.

    Unlike their outgoing counterparts who are more sensitive to rewards and risk-taking, shy people take a cautious approach to chance. Rather than the flashy chit-chat that defines social gathering, shy people listen attentively to what others say and absorb it before they speak. They're not thinking about what to say while the other person is still talking, but rather listening so they can learn what to say. Along the same lines, shy people share a common love of learning. They are intrinsically (内在地) motivated and therefore seek content regardless of achieving an outside standard.

    Being shy can also bring other benefits. Remember being in school and hearing the same kids contribute, until shy little Johnny, who almost never said a word, cut in? Then what happened? Everyone turned around to look with great respect at little Johnny actually talking. This is how shy people made good use of their power of presence: they “own” the moment by speaking calmly and purposefully, which translate to a positive image.

    Shyness is often related to modesty. Not to say that limelight-seekers aren't modest, but shy people tend to have an accurate sense of their abilities and achievements. As a result, they are able to acknowledge mistakes, imperfections, knowledge gaps and limitations.  Since shy people have a lower sensitivity to outside rewards than outgoing ones, they're more comfortable working with little information and sticking to their inner desires. Shy people are also more likely to insist on finding solutions that aren't primarily apparent. Don't believe me? Maybe you'll believe Albert Einstein, who once said, “It's not that I'm so smart, it's that I stay with problems longer.” Obviously, finding certainty where uncertainty is typically popular is a huge plus for any successful person.

    The myth that shy people are less effective leaders than their outgoing fellows is just a misunderstanding. Make wise use of your personality strengths to lead your business no matter what side of the range you fall on.

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宋文天祥

    德祐二年二月十九日,予除右丞相兼枢密使,都督诸路军马。时北兵已迫修门外,战、守、迁皆不及施。缙绅、大夫、士萃于左丞相府,莫知计所出。会使辙交驰,北邀当国者相见,众谓予一行为可以纾祸。国事至此,予不得爱身;意北亦尚可以口舌动也。初,奉使往来,无留北者,予更欲一觇北,归而求救国之策。于是,辞相印不拜,翌日,以资政殿学士行。

    初至北营,抗辞慷慨,上下颇惊动,北亦未敢遽轻吾国。不幸吕师孟构恶于前,贾余庆献谄于后,予羁縻不得还,国事遂不可收拾。予自度不得脱,则直前诟虏帅失信,数吕师孟叔侄为逆,但欲求死,不复顾利害。北虽貌敬,实则愤怒,二贵酋名曰“馆伴”,夜则以兵围所寓舍,而予不得归矣。

    未几,贾余庆等以祈请使诣北。北驱予并往,而不在使者之目。予分当引决,然而隐忍以行。昔人云:“将以有为也”。

    至京口,得间奔真州,即具以北虚实告东西二阃,约以连兵大举。中兴机会,庶几在此。留二日,维扬帅下逐客之令。不得已,变姓名,诡踪迹,草行露宿,日与北骑相出没于长淮间。穷饿无聊,追购又急,天高地迥,号呼靡及。已而得舟,避渚洲,出北海,然后渡扬子江,入苏州洋,展转四明、天台,以至于永嘉。

    呜呼!予之及于死者不知其几矣!诋大酋当死;骂逆贼当死;与贵酋处二十日,争曲直,屡当死;去京口,挟匕首以备不测,几自刭死;经北舰十余里,为巡船所物色,几从鱼腹死;真州逐之城门外,几徬徨死;如扬州,过瓜洲扬子桥,竟使遇哨,无不死;扬州城下,进退不由,殆例送死;坐桂公塘土围中,骑数千过其门,几落贼手死;贾家庄几为巡徼所陵迫死;夜趋高邮,迷失道,几陷死;质明,避哨竹林中,逻者数十骑,几无所救死;至高邮,制府檄下,几以捕系死;行城子河,出入乱尸中,舟与哨相后先,几邂逅死;至海陵,如高沙,常恐无辜死;道海安、如皋,凡三百里,北与寇往来其间,无日而非可死;至通州,几以不纳死;以小舟涉鲸波出,无可奈何,而死固付之度外矣!呜呼!死生,昼夜事也,死而死矣,而境界危恶,层见错出,非人世所堪。痛定思痛,痛何如哉!