在河流水质取样时，每根取样垂线上应按( )布设水质取样点。
A．流速
B．水深
C．取样断面形
D．河道弯曲情况
参考答案：B
I haven't seen Sara since she was a little girl, and she has changed beyond ________.[ ]
A. hearing
B. strength
C. recognition
D. measure
I can't tolerate being made fun of, ________ never to come again. [ ]
A. determined
B. being determined
C. determine
D. to determine
