[单项选择]Is the goal to make all of our paper from waste It’’s a (47)______ question. If we collect enough waste, could companies stop using wood altogether The answer is no—but, (48)______ to popular belief, this is not a bad thing. Although (49)______ rates are higher than ever before, there isn’’t enough to meet the growing demand—not even close. In addition to the fact that people still throw away a lot of (50)______ good paper, there’’s also some that’’s (51)______ and can’’t be recycled (think pizza boxes) , and lots that’’s never thrown away at all (such as books, magazines and filed documents). Another issue is quality. Wood (52)______ can be recycled between five and seven times before they become too weak and fall apart—so companies have to keep (53)______ new fiber into the system. If you talk to designers and printers, they’’ll also tell you that certain design applications can’’t be met using paper with high recycled (54)______ . Recently, some enviro