243.
(A) boarders
(B) borders
(C) boasters
(D) boosters (答案B)General Douglas MacArthur was an outstanding general, whose achievements made him a household name in the U.S. Born 244 a traditional military family, MacArthur chose to follow 244 his father’s footsteps to serve in the army.　He attended the celebrated United States Military Academy at West Point 245 he was First Captain and graduated with honors.　After graduation, he was involved in many important battles.　While 246 in the Pacific and 246 commander of the U.S. Army forces in the Far East, he wrote this prayer. It was for his only child, Arthur MacArthur Ⅳ, who 247 Douglas MacArthur’s grandfather, 247 outstanding general. The prayer is an important piece of writing; it uses beautiful language and shows a great man’s high expectations of his son. As a matter of fact, this prayer is not only a letter 248 to God 248 a message to all the youth.