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81."You had better not eat much sugar."
She advised me.............
82."Don't be silly."He said to the boy.
He..............
83.Making toys from used paper was an interesting idea.
It's interesting...........
part II
-of,as,than,new,most,colors,melts,from,saved,glass
Scrap glass taken (71)....... the glass manufacturing process, or cullet,has been intermally for year.The scrap glass is economical to use as a raw materials because it (72).......... at lower temperatures than other raw materials.Therefore, fuel and operating costs are relatively (73).............Glass that is to be recycled must be quite free from impurities and sorted by color.Glass containrs are the (74).....
commonly recycled from of glass,and their (75)....... are clear,brown and green.Other glass,such (76)....... ,window glass,pottery,and cooking utensils, are considered contaminants because they have more compositions (77)...........glass used in containers.In the United States the (78)...... containers make up 90 percent (79)....... the total glass used.The recycled glass is usually melted in a furnace and formed into (80)....... product.
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Sinh Học lớp 12
