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【简答题】
Can a Language Become Extinct? A language can become extinct when the last person who can speak it passes away. Or more likely when the second­last person who speaks it dies because then there is no one left to talk to. According to linguists (语言学家) there is nothing unusual about a single language dying out. But what is happening today is quite remarkable. According to the recent statistics, there are approximately 6,000 languages in the world as we speak. Of these, about half are going to die out in the next century. There are several reasons as to why a language can eventually die out. These range from natural disasters, such as hurricanes, to sociological factors, like cultural assimilation, in which the culture of a minority group is gradually replaced by a stronger one. The former can cause tribes to leave their natural habitat(栖息地) and therefore become fewer and fewer in number. However, it doesn't happen very frequently. In fact, the latter is a much bigger threat and it is responsible for the extinction of a lot of languages in countries like the USA and Australia. For instance, Chemehuevi is one of the languages which is really close to dying out since its sole speaker is an old, yet healthy, man named Johnny Hill, Jr. It is very important for as many languages as possible to be preserved. Scientists have been trying to raise people's awareness on how certain tribes have specific words which cannot be expressed in let's say English simply because there is no equal meaning. Namely, the Yupik of Alaska have 99 names to describe different layers of ice formation, or how the Tofa of Siberia classify reindeer (驯鹿). In other words, when languages die out, mankind's wisdom reduces. On a happier note, there are many famous cases which show what can be done to preserve languages in danger of extinction. In particular, the Maori in New Zealand have created so­called “language nests”: organizations which help children under five learn the language. They provide them with a setting where they are exposed to the language intensively so that they get to realise that communicating in Maori is as natural as communicating in English. There is always, of course, the risk that the children won't keep the language alive after they have left their “nests”. Nevertheless, hope dies hard. 小题1:What most probably caused the death of languages in the USA and Australia? A.Habitats were lost. B.Natural disasters struck. C.Native cultures disappeared. D.Foreign languages were spoken. 小题2:In Paragraph 3, the author states his opinion by ________ A.listing definitions B.providing examples C.presenting causes and effects D.comparing with other opinions 小题3:What does the author really intends to tell us in the last paragraph? A.Attempts may not produce the desired effect. B.Environment is important in language protection. C.People can do little about a language's extinction. D.Measures should be taken in spite of difficulties. 小题4:The author believes that ________. A.all languages are finally going to die out B.human wisdom can be reflected in languages C.the protective approaches have proved ineffective D.the current situation of languages hardly requires attention
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【判断题】我们都应该以李明为榜样,学好英语。We should all take a leaf out of Li Ming’s book and learn English well.
A.
正确
B.
错误
【单选题】我们都应该以李明为榜样,学好英语。
A.
We should all take lessons out of Li Ming’s book and learn English well.
B.
We should all take a leaf out of Li Ming’s affairs and learn English well.
C.
We should all take a leaf out of Li Ming’s book and learn English well.
D.
We should all take a lesson out of Li Ming’s book and learning English well.
【简答题】假如你让他待在你家,你就是在自找麻烦。 (ask for) 2. 善于学言的人能够把他们的错误变成通向成功的一大步。 (turn into) 3 . 我们都应该以李明为榜样,学好英语。 ( take a leaf out of someone’s book)
【单选题】ちょっと 味 をみてください。どうですか。
A.
あじ
B.
しお
C.
なか
D.
うち
【简答题】H 2 O 2 是重要的化学试剂,在实验室和生产实际中应用广泛。应用其不稳定性,H 2 O 2 可被用来研究催化剂对反应速率的影响。 (1)写出H 2 O 2 在MnO 2 催化下分解的化学方程式:____________________。 (2)H 2 O 2 的生产过程要严格避免混入Fe 2+ 和Fe 3+ ,否则会发生如下两个反应,加快其分解,且Fe 2+ 和Fe 3+ 各自的量保持不变。 ...
【简答题】我们都应该以李明为榜样,学好英语。 We should all ____ _____ ______ _____ _____ _____ _____ ________and learn English well.
【单选题】关于脉络膜恶性黑色素瘤,叙述错误的是()
A.
梭形细胞型预后好于上皮细胞型
B.
肿瘤愈靠近葡萄膜前方生存率愈高
C.
瘤细胞色素量愈丰富预后愈差
D.
诊断延迟是预后不良的原因
E.
预后与组织学类型无关
【简答题】(4分)Ⅰ:一化学兴趣小组的同学通过如下实验提取海带中的碘: ①粉碎海带,加一定量的氢氧化钾溶液后高温灰化;②用水浸泡海带灰,过滤;③用盐酸酸化滤液,加入碘酸钾(KIO3)氧化溶液中的碘离子(I — ),生成碘单质;④用四氯化碳溶液萃取水溶液中的碘。 请回答下列问题: (1)实验步骤③中的离子反应方程式为 (2)实验步骤③中也可用H2O2代替KIO3,离子方程式为: 。 (3)检验用四氯化碳萃取碘...
【简答题】我们都应该以李明为榜样,学好英语。 (take a leaf out of someone’s book)
【单选题】下列试剂哪一个是格式试剂( )。
A.
RNaX
B.
RMgX
C.
RZnX
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