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【单选题】
Which of the following is people‘ s normal response to the movies they watch? 查看材料A.
They feel that everything on the screen is familiar to them．
B.
They try to turn their dreams into reality．
C.
They become so involved that they forget their own problems．
D.
They are touched by the life stories of the actors and actresses．
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【简答题】洋地黄的生物检定法是将洋地黄制成酊剂，用等渗溶液稀释，然后以一定的速度缓慢注入至动物体内，直至动物死亡为止，以求得动物的最小致死量，现用豚鼠及家鸽10只，求得每千克致死量如表3—1所示： 问家鸽与豚鼠两种动物哪一种更适宜作洋地黄检定?
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