A. FREE B. FREEDOM C. FREEWAY D. FREELY(46-50). READ THE PASSAGE B...
45. a. free
b. freedom
c. freeway
d. freely
(46-50). Read the passage below carefully and choose the correct answer a, b, c or d.
Paper is named for papyrus, a reed like plant used by ancient Egyptians as writing
material more than 5,000 years ago. The Chinese invented the paper that we use 2,000
years ago.
A piece of paper is really made up of tiny fibers, not unlike a piece of material. The fibers
used in paper, however, are plant fibers, and there are millions of them in one sheet. In
addition to the plant fiber, dyes and additives such as resin may be used. Dyes can make
the paper different colors; resins may add weight and texture.
Where do these fibers come from? The majority of paper is made from the plant fiber that
comes from trees. Millions are cut down, but new trees are planted in their place. Paper
may be also made from things like old rags, or pieces of cloth. Wastepaper can be turned
into recycled paper. This recycling process saves forests and energy and reduces air and
water pollution.