in the past five of six years和 in the past five or six years的区别

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• 高中英语作文：职业介绍此作文是对一个人的职业进行简单介绍,包括该人的姓名、年龄、所从事的职业的名称、职业特点以及该人的工作内容等.此种职业越特殊越好,越新颖越好,例如给尸体化妆的、替人哭丧等.估计大家有些不太清楚作文的要求，我发个例文吧~一定得有此项职业所需的学历。Diana Stapleton,28,has been a veterinary surgeon for 3 years,She has always loved animals.Now she works with three other vets and earns about £16,400 a year.Only six universities in Britain offer the five-year degree course to become a vet,and you need good "A" level results in relevant subjects to get in.After graduting
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• -Your telephone number again?I( )quite catch it.-It's 9583422.A.didn't B.couldn't C.don't D.can't 为什么选择A而不选择B和C呢?From the dates（ ） on the coin,we decided that it was made five hundred years ago.A.marking B marked C,to be marked D.having marked 为什么选择B而不选择D?D表示的是什么?（ ）he knew nothing about her.A He appears as if B.It seems that C It appears as if D It seems as if 为什么选择D而不选择其它选项!有什么区别吗?
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