问答题简答题：室内音质设计中为什么需要反射声？如何争取？

题型：问答题简答题

芳香化合物A、B互为同分异构体，B的结构简式是。

A经①、②两步反应得C、D和E。B经①、②两步反应得E、F和H。上述反应过程、产物性质及相互关系如图所示。

（提示：CH₃COO－CH₃COONa＋－ONa）

（1）写出E的结构简式。

（2）A有2种可能的结构，写出相应的结构简式。

（3）F和小粒金属钠反应的化学方程式是，实验现象是，反应类型是。

（4）写出F在浓H₂SO₄作用下在170℃发生反应的化学方程式：，实验现象是，反应类型是。

（5）写出F与H在加热和浓H₂SO₄催化作用下发生反应的化学方程式，实验现象是，反应类型是。

（6）在B、C、D、F、G、I化合物中，互为同系物的是。

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完型填空。
A thousand years age Hong Kong was covered by a thick forest. As more and more people came to __1__ in Hong Kong, these trees were cut down and burnt. Now there is __2__ forest left, though there are still some small areas covered in trees. We call these woods. Elephants, tigers and many __3__ animals were living in the thick forest. When people came to live in Hong Kong, the __4__ began to die out. Early farmers grew rice and __5__ pigs and chickens in the valleys. They cut down the trees and burnt them. They needed __6__ to keep themselves warm in winter, to cook their food and to keep away the dangerous animals. Elephants quickly disappeared because there was not enough food for them. __7__ did most of the wolves and tigers. Monkeys and many other animals soon __8__ in the same way. You might think that there are no longer any animals in Hong Kong __9__ in the zoos. But there are still about 36 different animals __10__ there. One of the most interesting of Hong Kong's animals is the barking deer. These are beautiful little animals __11__ a rich brown coat and a white patch (补丁) under the tail. They look like deer but they are much smaller. They are less than two feel __12__. They make a noise rather like a dog __13__. In Hong Kong the barking deer has only a real enemy (敌人) — __14__. People hunt these little animals though it is illegal (违法的). There are now not many barking deer left. So it is important __15___ people to protect wild animals.
( )1．A．work ( )2．A．many ( )3．A．other ( )4．A．people ( )5．A．grew ( )6．A．fire ( )7．A．So ( )8．A．lived ( )9．A．besides ( )10. A．live ( )11. A．have ( )12. A．high ( )13. A．shouting ( )14. A．tigers ( )15. A．to	B．study B．a few B．others B．animals B．made B．hotness B．Such B．died B．except B．to live B．without B．higher B．crying B．men B．for	C．live C．no C．the other C．plants C．got C．heat C．As C．came C．and C．lived C．with C．short C．barking C．wolves C．like	D．enjoy D．not D．another D．things D．kept D．stoves (炉子) D．Nor D．left D．or D．living D．get D．shorter D．talking D．elephants D．of

室内音质设计中为什么需要反射声？如何争取？

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