胆红素生成过程的中间物质
A．胆红素-白蛋白B．胆红素葡萄糖醛酸酯C．胆红素-Y蛋白D．胆素E．胆绿素
参考答案：E
She didn’t come to the party last Sunday. _______, she must have made the party more exciting.
A．If she came
B．Would she come
C．Had she come
D．Did she come
如图所示，用绳跨过定滑轮牵引小船，设水的阻力不变，则在小船匀速靠岸的过程中（ ）
A．绳子的拉力不断增大
B．绳子的拉力不变
C．船所受浮力增大
D．船所受浮力变小
