主动脉夹层也可见于血压正常的患者，β受体阻滞剂常为首选治疗药物。 ()
参考答案：对
_____ achievement, last week's ministerial meeting of the WTO here earned a little, though not failed. [ ]
A. In case of
B. In honour of
C. In favour of
D. In terms of
一个口袋中原来有红花15朵，放入25朵白花．任意摸一朵花，摸到红花的可能性是______%，如果要使摸到红花的可能性为50%，需要从口袋中拿出______朵白花．
