痰标本采集的方法有___________、__________和培养标本。
参考答案:常规标本;24h标本
(Ⅰ)集合A={x|x2-ax+a2-19=0},B={x|x2-5x+6=0}.若A∪B=A∩B,求a的值.
(Ⅱ)若集合M={x|x≤5或x≥7},N={x|m+1≤x≤2m-1},且M∪N=R,求实数m的取值范围.
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.---Did you enjoy the movie?
---Sure, it is___________a beautiful country town with a variety of cultures.
A.put on
B.set in
C.taken on
D.got in