单选题：What does “Stymie” in the last paragraph mean?

题目内容：

What does “Stymie” in the last paragraph mean? A．To prevent．
B．To increase．
C．To arouse．
D．To deepen．

参考答案：【答案仅供学习，请勿对照自行用药等】

答案解析：

诊断支气管扩张首选的检查是

诊断支气管扩张首选的检查是A．胸部超声 B．胸部高分辨CT C．支气管造影 D．胸部X线 E．胸部磁共振

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