资本市场的首要功能是( )。
A．优化资源配置
B．稳定物价
C．提供高素质人才
D．促进体制创新
参考答案：A
So sudden ________ that the enemy had no time to escape.[ ]
A. did the attack
B. the attack did
C. was the attack
D. the attack was
关于腹主动脉的描述，错误的是
A．我国主动脉瘤发生的主要原因为外伤B．主动脉直径在肾动脉平面以上≥4cm可诊断C．直径＞7cm的动脉瘤破裂率高D．瘤体迅速增大、壁薄并局限性凸出应尽早手术E．CT增强扫描有助于发现瘤内血栓
o sudden ________ that the enemy had no time to escape.[ ]