请认真阅读下面短文，从短文后各题所给的A、B、C、D四个选项

科目：英语
题型：完型填空
难度：中等
人气：1312

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请认真阅读下面短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项题卡上将该项涂黑。
In eighteen thirty, only a few miles away from what is now the great city of Cincinnan, Ohio, lay a   36 and almost endless forest.
The area had a few settlements   37 by people of the frontier. Many of them had already left the area for settlements further   39 the west. But among those   40 was a man who had been one of the first people to arrive there.
He lived alone in a house of logs surrounded   41 all sides by the great forest. He seemed a part of the darkness and   42 of the forest, for no one had   43 known him to smile or speak an unnecessary word. His simple needs were   44 by selling or trading the skins of wild animals in the town.
His little log house had a single door. Directly   45 was a window. The window was boarded up（堵住）. No one could remember a(n) 46 when it was not. And no one knew why it had been   47 . I imagine there are few people living today who ever knew the   48 of that window. But I am one, as you shall   49 .
The man's name was said to be Murlock. He   50 to be seventy years old, but he was really fifty. Something other than years had been the   51 of his aging.
His hair and long, full beard were white. His gray,   52 eyes were sunken. His face was wrinkled. He was tall and thin with drooping shoulders—like someone with many   53 .
I never saw him. These   54 I learned from my grandfather. He told me the man's story   55 I was a boy. He had known him when living nearby in that early day.