跖方肌的作用是（）。
A、屈小趾
B、屈第二至五趾
C、展跖趾关节，伸趾间关节
D、内收第三至五趾
参考答案：B
–If you have any trouble, be sure to call me.
– __________________
A．I am glad to hear that.
B．I will. Thank you very much.
C．I have no trouble.
D．I will think it over.
羊水栓塞的早期诊断依据是
A．典型的临床表现
B．下腔静脉采血查到羊水成分
C．胸部X线片
D．同位素肺部扫描
E．心电图
