The older New England villages have changed relatively litt

The older New England villages have changed relatively little__________ a gas s

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斯金纳认为,“教学就是安排可能发生强化的事促进学习”,所以他建议利用操作条件反射理论安排程序教学,以便更有效地呈现于学习

斯金纳认为,“教学就是安排可能发生强化的事促进学习”,所以他建议利用操作条件反射理论安排程序教学,以便更有效地呈现于学习教材。其程序教学的基本原则是(  ) A

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The price of beerfrom 52 cents to$4 per liter during the su

The price of beerfrom 52 cents to$4 per liter during the summer season. A.alter

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When he realized the police had spotted him,he man_________

When he realized the police had spotted him,he man__________ the exit as quickl

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