术后急性疼痛可使手术部位的肌张力增加，不利于手术后病人早期下床活动。
参考答案：对
Dad, I was just wondering if you could lend me a few dollars until I _______ next week.
A．got paid
B．have paid
C．get paid
D．had been paid
桁架拱桥的总体受力图式是( )。
A．
B．
C．
