ovide mass housing, 67 and quickly, for millions of low and middle-income families, and to 68 the urgent housing requirements brought on by such natural disasters as floods, hurricanes and earthquakes. In the United States, a firm 69 in Hatfield, Pennsylvania, the Universal Papertech Corporation, 70 it has found one solution to the problem: houses 71 paper. The ultimate success of the paper houses will 72 a great deal on breaking 73 traditional patterns and concepts of home building and restrictive codes. One thing seems 74, though: the shelter revolution is already 75. The concept of paper houses was 76 about 10 years ago by the Universal Papertech Corporation. More than six years ago the company supplied 77 the then-current models as emergency housing for thousands of migratory (迁移的 . farm 78 in the state of California. Because the houses were 79 on the market, no one 80 knew just how long the unusual structures would 81. Today, however, in California they are still 82up well under the elements and also are 83 more people than at first. The manufacturer now 84 that the houses will have a useful life of at least 15 to 20 years, Whats" 85 important is that the interest in the paper houses has 86 beyond the United States to a number of foreign countries all over the world.
A.unnecessarily
B.invaluably
C.unimportantly
D.inexpensively