试题与答案

Directions:Complete the following passag

题型:填空题

题目:

Directions:Complete the following passage by filling in each blank with one word that best fits the

context.

     The long history of the Chinese Knot (中国结) dates back to ancient times

when people first used knots for fastening, wrapping, hunting and fishing. The

knot was developed into  1.________   art form during the Tang and Song

dynasties and later popularized in the Ming and Qing Dynasties.

One major characteristic of decorative knot work is that all the knots are tied

using one thread.   2.________   finished, the knot looks identical (一模一样

的)from both the front and back. They can come in a variety of colors such as:

gold, green, blue  3.________  black, and however, the most commonly used

color is red. 4.________  is because it symbolizes good luck and prosperity

(兴旺).

   Crafting (精心制作) the Chinese knot is a threestep process,   5.________ 

 involves tying, tightening and adding.  6.________  are many different shapes

of Chinese knots, offering blessings of happiness, love and good luck. In Chinese,

"knot" means reunion (团圆), friendliness, warmth, love, etc. Up to  7.________,

the art of the Chinese Knot has been used in necklaces, buttons and even hangings 

 8.________  cars or mobile phones.

答案:

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(1)①Cu+2H2SO4(浓) = CuSO4+SO2↑+2H2O 或Na2SO3+H2SO4=Na2SO4+SO2↑+2H2O(3分)②2Na2O2+2CO2=2Na2CO3+O2↑(3分)(2)①2Na2O2+2H2O=4Na++4OH-+O2↑(3分)②Al2O3+2OH-=2AlO- 2+H2...

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