阅读理解Onceaveryrichmanandhissoncollectedvaluablepaintings...
问题详情：阅读理解OnceaveryrichmanandhissoncollectedvaluablepaintingsbyfamousartistslikePicasso,VanGoghandMonet.Later,thesonlefttojointhearmy.Afterafewweeks,theoldmanreceivedalettersayinghissonhaddiedwh...