题目内容
Within three months after birth, babies begin to show a preference for complex and ________ stimuli as opposed to simple and familiar stimuli.
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The oldest known systems of education in history had two characteristics in common; they taught religion, and they ________ the traditions of the people.
Though nsuccessful, steam-powered models of airplanes made by the English inventor Henson in 1847 were ________, as many later models generally followed his designs.
With the increasing consciousness of self health care, millions of Chinese people ________ in a variety of daily physical exercises, ranging from traditional shadow boxing to modern aerobics.
Form antonyms of the follwoing words by adding prefixes.
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