休克病人中心静脉压为高，血压正常，处理原则为（）。
A．使用强心药物
B．用缩血管药
C．用扩血管药
D．补液试验
E．充分补液
参考答案：C
Though ______, many laws of nature exist.
A．not having been discovered
B．having not been discovered
C．not having discovered
D．having not discovered
模仿秀。（照样子，写词语）
喋喋不休 _____________________________________
摇摇晃晃 _____________________________________
