皮皮学，免费搜题
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搜题
【简答题】
Part B Look at the picture below and write an essay about 120 words, making reference to the following points: 1) a description of the picture 2) your comments on this phenomenon
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】What do American football and international football share in common?
A.
Both require strength and specialized skills.
B.
Both require height and responsibility.
C.
Both require enthusiasm and hard work.
D.
Both require flexibility and good health.
【简答题】矩心到力作用点的距离等于力臂吗?力的作用点沿作用线移动时,其力矩是否改变?