第33题: [单项选择]The main boyhood (interesting) of (psychologist) Jean Piaget (was) the observation of animals (in their) natural habitat(栖息地). A. interesting B. psychologist C. was D. in their 参考答案:A 答案解析:将interesting改为interest。interesting是形容词,意为“有趣的”,interest是它的名词形式,意为“兴趣”。该题主语的意思是,“心理学家Jean Piaget童年时代的