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What can be the best protective wrapping for the orange？
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第二节 完型填空
阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中选出能填入相应空白处的最佳选项。
One Christmas Eve, I kissed my family goodbye and went to spend the night in the hospital where 1 worked in its emergency department(急诊部). It was a【C1】______job.
At 9 pm, a man was brought in. He was having a heart attack and was【C2】______. I did my best to help him. Before 1 left in the morning, I stopped by to see【C3】______he was doing. He【C4】______the night and was sleeping.
Emergency doctors don't have【C5】______relationships with patients like other doctors. We get the【C6】______sick and the wounded. Often they're frightened or angry at us, just【C7】______we're there. They pass through our hands and out the door. We【C8】______see them again. I thought【C9】______about my heart patient. The【C10】______year, I got Christmas Eve duty【C11】______and I pulled myself off to work. At 9 pm sharp, the nurse told me【C12】______in the hall wanted to speak with me.
The man introduced himself as Mr. Lee and said, "You probably don't【C13】______me, but last Christmas Eve you【C14】______my life. Thank you for the【C15】______you gave me. " He and his wife handed me a small gift and left.
The following year my family was【C16】______that I could stay home on Christmas Eve. But 1 wanted to see if the Lees would【C17】______. I came to work and kept an eye on the door. Once again, at【C18】______9 pm, they appeared, carrying their new grandchild.
Mr. Lee, his family and I spent 13 Christmas Eves together. He died in 2005. The last time I saw him, he brought me a【C19】______imprinted(刻着)with a single word: Friendship. Now my family and I ring it every Christmas Eve at 9 pm sharp to remember the man who didn't【C20】______.
【C1】
The first kind of memory is sense memory. Everything you are sensing right now is stored here. Perhaps you feel the sun on your face or smell the aroma(香味) of food. Sense memories last only a few seconds, but they connect one moment to the next. They give your life a flow, even though they are quickly forgotten.
You keep a few items(条目) in working memory. These are memories you need for what you are doing. Suppose you look up a friend's telephone number in the phone book. You'll probably remember the number for a little while. But if you get distracted (分神), you might quickly forget it. A memory usually stays in your working memory for just a few days at most. Working memory has another limit, too. Only a small number of items fit into it at any given time.
Memories you want to keep for a long time go into your long-term memory. They can stay with you all your life. In long-term memory, you can store a huge number of items. Can you re member how to play your favorite game？ Do you recall your first birthday party？ If so, you are bringing up memories that are stored in your long-term memory. Sometimes, people have trouble finding a particular long-term memory. Have you ever struggled to remember a familiar name or fact？ When this happens, people sometimes say the information is "on the tip of the tongue. "
Which of the following best describes the sense memory？
下列题与下述案例有关，认真阅读本案例，选出正确的选项某房地产开发公司在对当地房地产市场进行调研的基础上，进行开发项目的可行性分析。若确定项目基准收益率为 12%，项目计算期内各年的现金流入和流出金额如下表。
该房地产开发项目第3年的累计净现金流量为()。
Shakespeare's plays were
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