【简答题】阅读理解 Book 1 Elixir written by Eric Walters Twelve-year-old Roth becomes a friend of Dr. Banting and his assistant, Mr. Best, who are doing research on a cure for diabetes (糖尿病). She finds herself torn...
【简答题】Book 1 Elixir written by Eric Walters Twelve-year-old Roth becomes a friend of Dr. Banting and his assistant, Mr. Best, who are doing research on a cure for diabetes (糖尿病). She finds herself torn betw...