第12题: [单项选择]Some educator try to put students of similar abilities into the same class because they believe this kind of ______ grouping is advisable. A. homogeneous B. instantaneous C. spontaneous D. anonymous 参考答案:A 答案解析:homogeneous意为“同种类的,同性质的,有相同特征的”,例如:homogeneous alloy 均质合金; spatially homogeneous空间均匀的;temporal homog