Objective:To study the effect of scopolamine on the formation of conditioned place preference.

目的：研究记忆损害对条件位置偏爱的影响。

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Method: Electrical lesions of ventral pallidum were done in 12 morphine dependent rats and the drug seeking behavior was measured by conditioned place preference paradigm.

方法··：毁损依赖大鼠腹侧苍白球，利用条件性位置偏爱实验测定术前、术后依赖大鼠对注射吗啡侧的偏爱程度，评价腹侧苍白球在药物强化效应程度中的作用。

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OBJECTIVE:To elucidate the effect of ondansetron(OND), a 5-HT3 receptor antagonist, on the morphine-induced conditioned place preference(CPP) in mice and its possible mechanism.

目的：探讨5-HT3型受体特异性拮抗剂奥丹西隆对吗啡诱导的条件性位置偏爱（CPP）效应的影响及其可能机制。

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In place of racial preference, the top 20% of each high-school graduating class in Florida will automatically be admitted to a state university.

ECONOMIST: Affirmative action in Florida

But he gives the singer some credit for visiting the museum in the first place, in preference to some of the city's seedier attractions.

BBC: Justin Bieber on Anne Frank: Five interpretations

In some parts of England, more than 40% of families failed to get a place in their first preference secondary school, according to official figures.

BBC: Parents face big local differences in secondary places