皮皮学，免费搜题
登录
搜题
【单选题】
What did the girl’s mother teach her?A.
Her mother taught her never to accept pay for offering kindness.
B.
Her mother taught her to give the poor some milk.
C.
Her mother taught her never to offer kindness to other people.
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】布氏硬度试验条件的选择必须使压痕直径d与压头直径D成( )关系。
【简答题】简述干扰对机电一体化系统的影响。