装订一本书要42张纸，现在860张纸装订20本书，纸够吗？
860÷42=20（本）…20（张）；
所以够装订20本书；
答：现在860张纸纸装订20本书．
With trees and grass ______39.6% of the urban area,the city of Weifang has taken on a new look. [ ]
A. covered
B. covering
C. to be covered
D. being covered
关于尿液颜色叙述正确的是()
A．丝虫病常见血红蛋白尿
B．急性肾小球肾炎常见胆红素尿
C．肝细胞性黄疸常见血尿
D．泌尿系肿瘤常见血尿
E．恶性疟疾常见乳糜尿
