药物在体内的过程：吸收、分布、生物转化、排泄，需进行跨膜转运的过程是（）。
参考答案：吸收、分布、排泄
下列材料属于有机合成材料的是（ ）
A．铝合金
B．铜钱
C．雨衣
D．不锈钢
He has poor eyesight ______computer work.[ ]
A. because too many
B. because too many
C. because of too much
D. because of much too
