题目内容：
A．This mountain rises l，5 3 2 feet making it the highest mountain on the Atlantic seaboard．
B．It is split almost in half by Somes Sound，a deep and narrow stretch of water，seven miles long．
C．The wealthy residents of Mt．Deserts Island selfishly kept it to themselves．
D．Mt．Desert island is one of the most famous of all the islands left behind by the glacier．
E．The term comes from the activity of the ice age．
F．It also lies in a major bird migration lane and is a resting spot for many birds．
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