Does he like maths ______art? [ ]
A. and
B. with
C. or
D. so
答案：C
(8分)回答下列问题。
(1)比较棉、麻、丝、毛、黏胶纤维跟合成纤维(六大纶)的缩水率。
(2)在电线外面包裹一层塑料，可以防止导线生锈，是何原因？
(3)专家认为，用铁锅炒菜或炖汤时，加些食醋，有利于补铁。请问是何原因？用化学方程式表示。
(4)干洗衣服时，有时需将拉锁、纽扣、甚至某些装饰片拆下，是何道理？
The following tax data is associated with a firm: Income tax expense of $ 25000. Income taxes payable of $ 30000. Pretax income of $ 80000. 40% tax bracket. What is this firm' s alternative effective tax rate
A．
B．
C．
