Read the following passage and circle the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbers blanks.
Paper can be recycled by reducing it to pulp and ___(1)___ it with pulp from newly harvested wood. As the recycling process ___(2)___ the paper fibers to breakdown, each time paper is recycled its quality decreases. This means that ___(3)___ a higher percentage of new fibers must be added, or the paper down cycled ___(4)___ lower quality products. Any writing or coloration of the paper must first be removed by deinking, which ___(5)___ removes fillers, clays, and fiber fragments.
Almost ___(6)___ paper can be recycled today, but some types are harder to recycle ___(7)___ others. Papers coated with plastic or aluminum foil, and papers ___(8)___ are waxed, pasted, or gummed are usually not recycled ___(9)___ process is too expensive. Gift wrap paper also cannot be recycled ___(10)___ to its low quality.

Câu hỏi
Đáp án
B. because

Câu hỏi thuộc Bài tập:

E6- GS- Unit 11- Practice 6