热点试题

[ 化学 ] 在体积恒定的密闭容器中,充入3 mol A 和1 mol B发生反应3A(g)+B(g)x

在体积恒定的密闭容器中,充入3 mol A 和1 mol B发生反应3A(g)+B(g)xC(g),达到平衡后,C 在平衡混合气体中的体积分数为φ。若维持温度不变,按 1.2 mol A.0.4 mol B、0.6 mol C为起始物质,
(1)若达到平衡后 C的体积分数仍为φ,则x值是____;
(2)若达到平衡后压强不变,C的体积分数仍为φ,则x值是___。

2016-05-16 | 0

[ 数学 ] 下列计算中,正确的是 [     ] A.B.C.D.

下列计算中,正确的是[    ]
A.
B.
C.
D.

2016-05-18 | 0

[ 数学 ] 龙博士有9颗糖果,其中有3颗是水晶糖,3颗是水果糖、3颗是牛奶糖,龙博士让小美从中任意选出

龙博士有9颗糖果,其中有3颗是水晶糖,3颗是水果糖、3颗是牛奶糖,龙博士让小美从中任意选出3颗糖果.那么,小美选出的糖果一共有______种不同的可能.

2016-05-21 | 0

[ 数学 ] 由一个平面多边形沿某一方向平移形成的空间几何体叫做        

由一个平面多边形沿某一方向平移形成的空间几何体叫做        

2016-05-24 | 0

[ 语文 ] 阅读下面的文言文,完成小题。皇祐三年,司户孔宗旦策智高必反,以书告其将陈珙。珙不听,宗旦言

阅读下面的文言文,完成小题。
皇祐三年,司户孔宗旦策智高必反,以书告其将陈珙。珙不听,宗旦言不已。珙怒诋之曰:“司户狂邪?”四年,智高出横山,略其寨人,因其仓库而大赈之。宗旦又告曰:“事急矣,不可以不戒。”珙又不从。凡宗旦之于珙,以书告者七,以口告者多至不可数。度珙终不可得意,即载其家走桂州,曰:“吾有官守不得去,吾亲毋为与死此。”既行之二日,智高果反,城中皆应之。宗旦犹力守南门,为书召邻兵,欲拒之。城亡,智高得宗旦,喜欲用之。宗旦怒曰:“贼!汝今立死,吾岂可污邪!”骂不绝口。智高度终不可下,乃杀之。
当其初,使宗旦言不废,则邕州之祸必不发。发而吾有以待之,则必无事。使独有此一善,固不可不旌,况其死节堂堂如是! 而其事未白于天下。比见朝廷所宠赠南兵以来伏节死难之臣,宗旦乃独不与,此非所谓“曲突徙薪无恩泽,焦头烂额为上客”邪?
使宗旦初无一言,但贼至而能死不去,固不可以无赏。盖先事以为备,全城而保民者,宜责之陈珙,非宗旦事也。今猥令与陈珙同戮,既遗其言,又负其节。为天下者,赏善而罚恶;为君子者,乐道人之善,乐成人之美。岂当如是邪?凡南方之事,卒至于破十余州,覆军杀将,丧元元之命,竭山海之财者,非其变发于隐伏,而起于仓卒也。内外上下有职事者,初莫不知,或隐而不言,或忽而不备,苟且偷托,以至于不可御耳。有一人先能言者,又为世所侵蔽,令与罪人同罚,则天下之事,其谁复言耶?
闻宗旦非独以书告陈珙,当时为使者于广东西者,宗旦皆历告之。今彼既不能用,惧重为已累,必不肯复言宗旦尝告我也。为天下者,使万事已理,天下已安,犹须力开言者之路,以防未王之,患。况天下之事,其可忧者甚众。而当世之患,莫大于人不能言与不肯言,而甚者或不敢言也。则宗旦之事,岂可不汲汲载之天下视听,显扬褒大其人,以惊动当世耶?
(选自《与孙司封书》,有删改)
小题1:对下列句子中划线的词的解释,不正确的一项是(  ) (3分)
A.司户孔宗旦智高必反策:预计
B.久使独有此一善,固不可不旌:表彰
C.使宗旦初无一言使:假使
D.或隐而不言,或而不备忽:忽然
小题2:以下各组句子中,能表现宗旦“直言不讳、勇于为国献身”的高贵品质的一组是:(  ) (3分)
①宗旦言不已  ②略其寨人,因其仓库而大赈之 ③即载其家走桂州
④但贼至而能死不去 ⑤事急矣,不可以不戒 ⑥或隐而不言,或忽而不备
A.①②⑥B.①④⑤C.③⑤⑥D.①②⑤
小题3:下列对原文有关内容的概括和分析,不正确的一项是(  ) (3分)
A.智高攻破邕州城后,俘获了宗旦,并想要任用宗旦,但被宗旦婉言拒绝了。
B.作者认为朝廷应该着重奖励像宗旦那样“曲突徙薪”的臣子,而不是只奖励救火时烧得焦头烂额的那些“上客”。
C.作者认为治国者,应该惩恶扬善,应该乐于称赞别人的长处,并成全别人的美事。
D.关于智高必反的事,宗旦不仅多次报告陈拱,对于当时在广东、广西两路的朝廷使者,宗旦也都一一告知了。但他们当时都未采纳宗旦的意见,最终造成了灾祸。
小题4:把文中划横线的句子翻译成现代汉语。(10分)
(1) 谨庠序之教,申之以孝悌之义,颁白者不负戴于道路矣。
(2) 欲予秦,秦城恐不可得,徒见欺;欲勿予,即患秦兵之来。计未定,求人可使报秦者,未得。

2016-05-26 | 0

[ 语文 ] 【甲】从小丘西行百二十步,隔篁竹,闻水声,如鸣佩环,心乐之。伐竹取道,下见小潭,水尤清冽。

【甲】从小丘西行百二十步,隔篁竹,闻水声,如鸣佩环,心乐之。伐竹取道,下见小潭,水尤清冽。全石以为底,近岸,卷石底以出,为坻,为屿,为嵁,为岩。青树翠蔓,蒙络摇缀,参差披拂。 
  潭中鱼可百许头,皆若空游无所依,日光下澈,影布石上。佁然不动,俶尔远逝,往来翕忽。似与游者相乐。
  潭西南而望,斗折蛇行,明灭可见。其岸势犬牙差互,不可知其源。
  坐潭上,四面竹树环合,寂寥无人,凄神寒骨,悄怆幽邃。以其境过清,不可久居,乃记之而去。
【乙】元丰六年十月十二日夜,解衣欲睡,月色入户,欣然起行。 念无与为乐者,遂至承天寺寻张怀民。怀民亦未寝,相与步于中庭。庭下如积水空明,水中藻、荇交横,盖竹柏影也。 何夜无月?何处无竹柏?但少闲人如吾两人者耳。
小题1:解释下面划线的词语。(4分)
(1)潭中鱼百许头                  (2)乃记之而          
(3)无与为乐者                    (4)相与步于中庭        
小题2:用现代汉语翻译下面句子。(4分)
(1)斗折蛇行,明灭可见。          (2)但少闲人如吾两人者耳。
小题3:【甲】【乙】两文所表现出的情感虽不尽相同,但都写到了作者的快乐,柳宗元的快乐是因为“  ”,还因为潭中鱼“                 ”;而苏轼的快乐是因为“          ”。(3分)
小题4:【甲】【乙】两文中画波浪线的句子都写到景物的“影”,它们的作用有何不同?

2016-05-27 | 0

[ 英语 ] Recently, one of my best friends, whom I’d sh

Recently, one of my best friends, whom I’d shared just about everything with since the first day of kindergarten, spent the weekend with me. Since I moved to a new town several years ago, we’d both always looked forward to the few times a year when we could see each other.
Over the weekend, we spent hours and hours, staying up late into the night, talking about the people she was hanging around with. She started telling me stories about her new boyfriend, about how she experimented with drugs and was into other bad habits. I was blown away! She told me how she had been lying to her parents because they didn’t want her around him.
I tried to convince her that she was ruining her future and heading for big trouble. But she didn’t believe me. Her self-respect seemed to have disappeared. I just couldn’t believe that she really thought it was acceptable to hang out with such a loser.
By the time she left, I was really worried about her. It had been so discouraging, and I had come close to telling her several times during the weekend that maybe we had just grown too far apart to continue our friendship—but I didn’t. I put the power of friendship to the ultimate(最终的)test. We’d been friends for far too long. I had to hope that she valued me enough to know that I was trying to save her from hurting herself. I wanted to believe that our friendship could conquer (克服)anything.
A few days later, she called to say that she had thought long and hard about our conversation,and then she told me that she had broken up with her boyfriend.I just listened on the other end of the phone with tears of joy running down my face. It was one of the truly rewarding moments in my life.
Never had I been so proud of a friend.
小题1:From the beginning of the text,we can learn that the author     .
A.lost touch with the girl several years ago.
B.used to spend weekends with the girl.
C.moved to the same town as the girl.
D.kept in touch with the girl.
小题2:It can be inferred that the girl       .
A.knew she was in danger.B.took the author seriously.
C.lost hope of a bright future.D.used to quarrel with her parents.
小题3:What’s the author’s purpose in telling the story?
A.To show the power of friendship.
B.To describe the troubles of friendship.
C.To tell the necessity of trusting friends.
D.To tell the importance of keeping up with friends.

2016-05-29 | 0

[ 物理 ] 如图所示,某同学用弹簧秤拉着木块在水平桌面上滑动,记录了下表所示的测量数据,为了测定木块与

如图所示,某同学用弹簧秤拉着木块在水平桌面上滑动,记录了下表所示的测量数据,为了测定木块与水平桌面间的动摩擦因数μ,他应选用第       次实验数据,还必须测量的物理量是        

2016-05-29 | 0

[ 物理 ] 如图是一列声波在空气中传播的波形图,若OA=1.02m,则这列波的波长为 ________

如图是一列声波在空气中传播的波形图,若OA=1.02m,则这列波的波长为 _________ m,周期为_________s,频率为_________HZ.(声波在空气中传播速度为340m/s).

2016-05-29 | 0

[ 物理 ] 如图(a)所示,光滑水平面上有A、B两物块,已知A物块的质量mA=1kg,,初始时刻B静止

如图(a)所示,光滑水平面上有A、B两物块,已知A物块的质量mA=1kg,,初始时刻B静止,A以一定的速度向右运动,之后与B发生碰撞,碰撞后它们的位移一时间图象如图(b)所示(规定向右为位移的正方向),则物块B的质量为多少?

2016-06-02 | 0