在教学中不断变换同类事物的非本质属性，以便突出本质属性的方法是（ ）。

(单选题)The turning point in the process of growing up is when you d (单选题)Words of encouragement create social capital as it makes the (单选题)In the new normal ______ China’s economy is transforming fro (单选题)—Recently, Huawei has launched its latest smartphone Mate 30 (单选题)China will become the world’s largest market for autonomous (单选题)The past 70 years ______ China realizing unprecedented econo (单选题)Ruth Handler, the creator of the Barbie dolls, once said, “M (单选题)Good teachers ______ the process of professional development (单选题)Generally, teachers’ reflection arises from a classroom ____ (单选题)______ by the content of the program, she thought it not sui