题干

制造导弹的合金材料的重要元素钕的某些信息如图所示,下列有关钕的说法错误的是(  )



A:原子序数为60

B:属于金属元素

C:相对原子质量为144.2g

D:核内质子数为60

上一题 下一题 0.0难度 选择题 更新时间:2011-10-25 03:06:08

答案(点此获取答案解析)

C

同类题2

阅读下文,完成下列小题。

      ①一谈到读书,我的话就多了!

      ②我自从会认字后不到几年,就开始读书。倒不是四岁时读母亲教给我的商务印书馆出版的国文教科书第一册的“天、地、日、月、山、水、土、木”以后的那几册,而是七岁时开始自己读的“话说天下大势,分久必合,合久必分……”的《三国演义》。

      ③那时我的舅父杨子敬先生每天晚饭后必给我们几个表兄妹讲一段《三国演义》,我听得津津有味,什么“宴桃园豪杰三结义,斩黄巾英雄首立功”,真是好听极了。但是他讲了半个钟头,就停下去干他的公事了。我只好带着对于故事下文的无限悬念,在母亲的催促下,含泪上床。

      ④此后,我决定咬了牙,拿起一本《三国演义》来,自己一知半解地读了下去,居然越看越懂,虽然字音都读得不对,比如把“凯”念作“岂”,把“诸”念作“者”之类,因为就只学过那个字一半。

      ⑤谈到《三国演义》,我第一次读到关羽死了,哭了一场,便把书丢下了。第二次再读时,到诸葛亮死了,又哭了一场,又把书丢下了。最后忘了是什么时候才把全书读到“分久必合”的结局。

      ⑥这时就同时还看了母亲针线笸箩里常放着的那几本《聊斋志异》。聊斋故事是短篇的,可以随时拿起放下,又是文言的,这对于我的作文课很有帮助。时为我的作文老师曾在我的作文本上批着“柳州风骨,长吉清才”的句子,其实我那时还没有读过柳宗元和李贺的文章,只因那时的作文,都是用文言写的。

      ⑦因为看《三国演义》,引起了我对章回小说的兴趣,对于那部述说“官逼民反”的《水浒传》尤其欣赏。那部书里着力描写的人物,如林冲——林教头风雪山神庙一回,看了使我气愤填胸!——武松、鲁智深等人,都有其自己极其生动的风格,虽然因为作者要凑成三十六天罡七十二地煞勉勉强强地写满了一百零八人的数目,我觉得也比没有人物个性的《荡寇志》强多了。

      ⑧《精忠说岳》并没有给我留下太大的印象,虽然岳飞是我从小就崇拜的最伟大的爱国英雄。在此顺便说一句,我酷爱古典诗词,但能够从头背到底的,只有岳武穆的《满江红》“怒发冲冠”那一首,还有就是李易安的《声声慢》,她那几个叠字:“寻寻觅觅,冷冷清清,凄凄惨惨戚戚”写得十分动人,尤其是以“寻寻觅觅”起头,描写尽了“若有所失”的无聊情绪。

      ⑨到我十一岁时,回到故乡的福州,在我祖父的书桌上看到了林琴南老先生送给他的《茶花女遗事》,使我对林译外国小说产生广泛的兴趣,那时只要我手里有几角钱,就请人去买林译小说来看,这又使我知道了许多外国的人情世故。

      ⑩《红楼梦》是在我十二三岁时候看的,起初我对它的兴趣并不大,贾宝玉的女声女气,林黛玉的哭哭啼啼都使我厌烦,还是到了中年以后再拿起这部书看时,才尝到“满纸荒唐言,一把辛酸泪”,一个朝代和家庭的兴亡盛衰的滋味。

      ⑪总而言之,统而言之,我这一辈子读到的中外的文艺作品,不能算太少。我永远感到读书是我生命中最大的快乐!从读书中我还得到了做人处世的“独立思考”的大道理,这都是从“修身”课本中所得不到的。

      ⑫我自1986年到日本访问回来后即因伤腿闭门不出,“行万里路”做不到了,“读万卷书”更是我唯一的消遣。我每天都会得到许多书刊,知道了许多事情,也认识了许多人物。同时,书看多了,我也会挑选,比较。比如说看了精彩的《西游记》就会丢下烦琐的《封神传》,看了人物栩栩如生的《水浒传》就不会看索然乏味的《荡寇志》等等。对于现代的文艺作品,那些写得朦朦胧胧的,堆砌了许多华丽的词句的、无病而呻吟、自作多情的风花雪月的文字,我一看就从脑中抹去,但是那些满带着真情实感,十分质朴浅显的篇章,那怕只有几百上千字,也往往使我心动神移,不能自已!

同类题3

阅读理解
    Spring is an inviting season for outdoor activities. But be careful—the warm weather is also a hotbed for viruses(病毒) and disease.  
This March, the influenza(流行性感冒) A(H7N9) virus hit Shanghai, Anhui, Jiangsu and Zhejiang. It was reported that by April 11 at least 35 people had been infected (被感染的) with the H7N9 virus, and nine of them had died.
    The influenza A (H7N9) virus is one type of influenza A H7 viruses. Influenza A H7 viruses normally spread among birds.
This is the first time human infections with H7N9 viruses have been reported in China. Earlier reports were about H5N1 and H1N1.
All the three viruses are influenza A viruses but they are not the same. H7N9 and H5N1 are animal influenza viruses that could infect people. However, H1N1 viruses can be divided into two groups. One group can normally infect people and the other normally infects animals. Also, H1N1 can spread from human to human, but H7N9 probably can't, according to the World Health Organization (WHO).
Most people infected with H7N9 looked like they had the common flu. Some people had bad pneumonia(肺炎). They suffered from a fever, a cough and shortness of breath.
    But don't be afraid – it is not easy to be infected with the virus. One of the possible reasons is close contact with sick poultry (家禽) waste. People may also be infected through breath, according to National Health and Family Planning Commission.
Here are some tips from the WHO that can protect you from being infected.
    Wash your hands with soap and running water before you eat, after you use the toilet, and after touching animals or animal waste.
When coughing or sneezing cover your mouth and nose with a mask(口罩),tissue(纸巾) or a sleeve.
    Get a good rest and do exercises, which will help make your body strong enough to stand up to the virus.