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It is one of the most annoying words in the English language and it seems there is no escaping it．The word “huh?” is in worldwide use, a study found．

Researchers discovered that languages spoken in countries from Ghana and Laos to Iceland and Italy all include ‘‘huh?”, or something that sounds very like it. They said that while the study may sound silly，the word is an absolutely necessary part of speech．Without it and similar words，it would be impossible to show that we haven’t heard or understood what had been said and this would lead to constant misunderstandings．

But while other words used in the same context，such as ‘‘sorry'’ or‘ ‘what”，vary widely across languages，“huh?” remains unchanged．

The Dutch researchers carefully studied ten languages from around the world，including Siwu, which is spoken in Ghana, and an Australian Aboriginal language，as well as Italian，Spanish，Dutch and Mandarin Chinese．

They analyzed tapes of recorded conversations for words that sounded like ‘‘huh?” and were used to request that whatever had just been said be repeated．All contained a version of ‘‘huh?”．The word was also found in another 21 languages．While there were subtle differences in each country, all sounded basically the same．

This is surprising because normally unrelated languages will use very different words to describe the same thing．For instance，the Japanese for “dog’’ is ‘‘inu”，while the French is‘ ‘chien”．It is thought that languages around the world have developed their own version of “huh?’’ because the sound is quick and simple to form，as well as being easily understood．

The researchers，said that it might seem unimportant to carry out scientific research into a word like “huh?'’ but in fact this little word is an essential tool in human communication．They also have an answer for those who claim that ‘‘huh?’’ isn’t a word．They say that it qualifies because of the small differences in its pronunciation in different languages．It also can be considered a word because it’s something we learn to say，rather than a grunt or cry that we are born knowing how to make．

小题1:According to researchers，the word “huh?” is very important in speech because of       .

A．its important function in communication

B．its simple and easy sound and spelling

C．its popularity in every language

D．its stable meaning in language development小题2:If you hear someone you’re speaking to say “huh?”, what should you do?

A．You should apologize to her for speaking in a low voice．

B．You should invite her to share her different views politely．

C．You should try to say what you’ve just said again in a clearer way．

D．You should ask her to repeat what she says before that.小题3:The main method used in the research of “huh?” was_____________．

A．comparing different words with the same meaning in different languages

B．interviewing language experts in universities

C．talking with people from ten different countries

D．analyzing the recorded conversations in different languages小题4: According to researchers，‘‘huh?” should be considered a word rather than a sound because  __________ .

A．it is pronounced quite differently around the world

B．it is something humans learn to say

C．there is a clear and consistent spelling of the word

D．it is listed in most dictionaries

下图是初中化学常见气体（氧气、氢气、二氧化碳）的制取和收集的实验装置，请按要求回答下面问题：

（1）若装置A、B组合，可以制取和收集的气体是______（填化学式，下同）；若装置A、C组合，可以制取和收集的气体是______；若装置A、D组合，可以制取和收集的气体是______．

（2）有的同学认为装置E可以代替装置B、C、D收集气体，欲收集具备下面性质的气体，应如何使用装置E？

收集比空气密度大的气体：进气口为______（填“a”或“b”，下同）；

（3）装置E还可以作为洗气瓶用于干燥某些气体，若干燥氧气，洗气瓶中应装入的试剂是______，进气口为______．

硬铝导体的最大允许应力为（）MPa。

A.70

B.90

C.110

D.140

斯欧克来的全球气候区根据：（）、（）、（）等因素，把全球分为四个气候区：（）气候区、（）气候区、（）气候区和寒冷气候区。这种方法的缺点是（）。