Book1ElixirwrittenbyEricWalters twelve-year-oldRothbeco...
问题详情：Book1ElixirwrittenbyEricWalters twelve-year-oldRothbecomesafriendofDr.Bantingandhisassistant,Mr.Best,whoareinsearchofacurefordiabetes(糖尿病).Shefindsherselftornbetweenhersympathyfortheanimal...