有关手术体位安置，只要手术需要，可将病人安置在超过忍受限度的强迫体位上。
参考答案：错
The manager entered the office and was happy to learn that four-fifths of the tickets ______. [ ]
A. was booked
B. had been booked
C. were booked
D. have been booked
染色体核型中缩写符号“：”表示()
A．断裂
B．倒位
C．易位
D．插入
E．缺失
