下列各选项中的城市均为著名国际金融中心的是[ ]
A、香港、澳门、新加坡
B、纽约、伦敦、苏黎世
C、东京、巴黎、香港
D、柏林、悉尼、莫斯科
答案：B
有一蛋白质水解产物在用pH6阳离子交换剂层析时，第一个被洗脱下来的氨基酸是()
A．缬氨酸(pI5.96)
B．赖氨酸(pI9.74)
C．天冬氨酸(pI2.77)
D．精氨酸(pI10.76)
E．酪氨酸(pI5.66)
Dressed in a newly-bought skirt , _________.
A．I could hardly recognize her
B．nobody could recognize her
C．she could hardly be recognized by me
D．there was nobody who could recognize her
