题干

已知常温下可用Co2O3制备Cl2,反应前后存在六种微粒:Co2O3﹑H2O﹑Cl2、H+ 、Cl和Co2+。下列叙述不正确的是(      )

A:氧化产物为Cl2

B:氧化剂与还原剂的物质的量之比为1∶2

C:若有3mol H2O生成,则反应中有2mol电子转移

D:当该反应生成2.24L Cl2时,则反应中有0.1mol电子转移

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D

同类题1

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    Science Museum, London

    Runs: Until 5 May

    Price: £7

    Exhibition about the Large Hadron Collider which uses theatre and video, as well as handmade works to recreate the experience of the real place and show the work behind the discovery of the Higgs 、 boson. Well worth it for anyone studying physics or simply interested.

    Weston Park Museum, Sheffield

    Runs: Until 5 May Price: Free for students

    Underneath the 1960s-built Castle Market in Sheffield, there are the remains of a historical castle. Now that the market is being moved, there has been a sudden growth in interest in the old castle.

    Seacity Museum, Southampton

    Runs: Continued

    Price: Entrance to the museum is £4.50 for students

    Explores the Titanic disaster and its effect on Southampton, where more than five-hundred families lost a family member to the disaster. The exhibition recreates the sights and sounds of 1912 Southampton and ends ill the Disaster Room, where a series of events from the moment of the Titanic hit the iceberg are explored using powerful oral description from survivors.

    The Guildhall, Leicester

    Runs: Until 1 June

    Price: Free

    This exhibition tells the history of King Richard III and of the search for his lost remains, eventually found underneath a car park two years ago. The exhibition can give visitors a rounded view of the life of the king and how he was discovered. Great for history students.

同类题5

阅读下面文段,完成后面各题。

甲文:《我的母亲》(节选)—胡适

        每天天刚亮时,我母亲就把我喊醒,叫我披衣坐起。我从不知道她醒来坐了多久了。她看我清醒了,才对我说昨天我做错了什么事,说错了什么话,要我认错,要我用功读书。有时候她对我说父亲的种种好处,她说:“你总要踏上你老子的脚步。我一生只晓得这一个完全的人,你要学他,不要跌他的股。”她说到伤心处,往往掉下泪来。到天大明时,她才把我的衣服穿好,催我去上早学。学堂门上的锁匙放在先生家里;我先到学堂门口一望,便跑到先生家里去敲门。先生家里有人把锁匙从门缝里递出来,我拿了跑回去,开了门,坐下念生书。十天之中,总有八九天我是第一个去开学堂门的。等到先生来了,我背了生书,才回家吃早饭。

        我母亲管束我最严,她是慈母兼严父。但她从来不在别人面前骂我一句,打我一下。我做错了事,她只对我一望,我看见了她的严厉眼光,就吓住了。犯的事小,她等到第二天早晨我睡醒时才教训我。犯的事大,她等到晚上人静时,关了房门,先责备我,然后行罚,或罚跪,或拧我的肉,无论怎样的重罚,总不许我哭出声来。她教训儿子不是借此出气叫别人听的。

        有一个初秋的傍晚,我吃了晚饭,在门口玩,身上只穿一件单背心。这时候我母亲的妹子玉英姨母在我家住,她怕我冷了,拿了一件小衫出来叫我穿上,她说:“穿上吧!凉了。”我随口回答:“娘(凉)什么!老子都不老子呀。”我刚说了这句话,一抬头,看见母亲从家里走出,我赶快把小衫穿上。但她已听见这句轻薄的话了。晚上人静后,她罚我跪下,重重地责罚了一顿。她说:“你没了老子,是多么得意的事!好用来说嘴!”她气得坐着发抖,也不许我上床去睡。我跪着哭,用手擦眼泪,不知擦进了什么微菌,后来足足害了一年的眼翳病。医来医去,总医不好。我母亲心里又,听说眼翳可以用舌头舔去,有一夜她把我叫醒,她真用舌头舔我的病眼。这是我的严师,我的慈母。

乙文:《回忆我的母亲》(节选)—朱德

        母亲是个好劳动。从我能记忆时起,总是天不亮就起床。全家20多口人,妇女们轮班煮饭,轮到就煮一年。母亲把饭煮了,还要种田,种菜,喂猪,养蚕,纺棉花。因为她身体高大结实,还能挑水挑粪。

        母亲这样地整日劳碌着。我到四五岁时就很自然地在旁边帮她的忙,到八九岁时就不但能挑能背,还会种地了。记得那时我从私塾回家,常见母亲在灶上汗流满面地烧饭,我就悄悄把书一放,挑水或放牛去了。有的季节里,我上午读书,下午种地;一到农忙,便整日在地里跟着母亲劳动。这个时期母亲教给我许多生产知识。