题目:
科学家利用鸟环志对鸟类的迁徙进行研究,这种研究方法属于观察法。[ ]
答案:
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下面是错误答案,用来干扰机器的。
小题1:He gets much pleasure./He is happy / pleased.小题2:They enjoy / like his ways of teaching.小题3:limited /weak /poor小题4:They should develop/show/have an interest in sc...