下面是一篇打乱次序的短文，请根据大意重新排列（短文第一段已给出）。
Dick was born in a poor family. His father had a small boat and went fishing in the morning and sold the
fish in the market in the afternoon. Then he bought some food for his family.
(A) "No, it's much cheaper," said the man."But another name was engraved (刻) on it.""It doesn't matter,"
said Dick. "My aunt couldn't read."
(B) The woman was very happy but one day she died in a traffic accident. The young man was very sad.
After he buried her, he decided to buy a beautiful tombstone (墓碑) for her. He went to town and came in a
shop, but all the tombstones were too expensive.
(C) He asked,"Do you sell an old tombstone, sir?""Yes, we do, sir." answered the shopkeeper."Is it as
expensive as the new one?"
(D) Twenty years passed. Dick became a tall, strong man. He found work on a farm. He worked hard and
wanted to get more money. He often went to see his aunt with some nice presents.
(E) When winter came, they were often hungry. One morning the hungry man fell into the river and wasn't
found. Dick's mother left her three-year-old son without saying good-bye. His aunt had to look after him.
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PCl5（g）达平衡时，PCl5为0.40 mol，如果此时移走1.0 mol PCl3和0.50 mol Cl2，在相同温度下再达平衡时PCl5的物质的量是（ ） 