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【单选题】
-Mary, I hope you've packed and are ready to leave. -Yes, I've packed, but not quite ready. I can't find my passport. -Your passport? That's the one thing you mustn't leave behind. -I know. I haven't lost it. I've packed, but ( ) -Well, you have to find it at the airport. Come on! The taxi is waiting.A.
there might be a traffic jam.
B.
I've probably left it in a taxi.
C.
I'm afraid you've taken it.
D.
I can't remember which bag it's in.
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【简答题】古核细胞与原核细胞的不同点表现在（）、（）、（）、核糖体、和5SrRNA。
【单选题】关于抗癫痫药临床应用的说法中正确的是
A.
剂量宜从大剂量开始
B.
单纯型癫痫选用一种抗癫痫药即可
C.
治疗过程中可以突然停药
D.
控制癫痫症状后即可停药
E.
原来的抗癫痫药疗效不佳时直接换用其他抗癫痫药
【简答题】生产力的基本要素是( )( )和( )