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按题目要求绘制 E-R图 ,并将E-R图转化成关系模式。 设某连锁药店数据库要管理如下信息 : 一是 “ 药厂 ” ,属性有编号、药厂名、地址、电话;二是 “ 药店 ” ,属性有药店号、药店名、地址;三是 “ 药品 ” ,属性有药品编号、药品名、单价、类别、有效期、批号;四是 “ 员工 ” ,属性有员工号、姓名、入职时间、工资。 设药店与药厂之间存在 “ 订货 ” 联系,每个药店可从多个药厂进货,每个药厂可以向多个药店供货,需要记录订货量;每个药店可以销售多种药品,每种药品可在多个药店销售,需要记录销售量;每种药品只由一个药厂生产,每个药厂可以生产多种药品;每个药店有多名员工,每个员工只属于一个药店。 根据上面的描述, 绘制 E-R 图并将其转换成关系模式。
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【简答题】She's always been interested in _____ problems, like how we can plant more trees.
【单选题】(单选题)在印度,有的孩子要举行一种仪式后,才能够抱出门见太阳。举行仪式的时候,父亲要对母亲说些赞扬和祝福的话,母亲把孩子抱出家门,父亲引导孩子观看太阳 ,并进行祈祷,祈求孩子茁壮成长,长命百岁,吉祥一生。这种仪式叫做( )。
A.
观日礼
B.
生男礼
C.
命名礼
D.
再生礼
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【单选题】听力原文：M: Thanks for stopping by, Ann. I'd like to talk to you about a research project I thought you might be interested in. A friend of mine is working at Yellowstone National Park this summer... W: Y...
A.
A vacation trip to Yellowstone Park.
B.
A lecture by a visiting professor.
C.
Her biology thesis.
D.
A research project.
【单选题】听力原文：M: Thanks for stopping by, Ann. I'd like to talk to you about a research project that I thought you might be interested in. A friend of mine is working in Yellow Stone National Park this summer. ...
A.
A vacation trip to Yellowstone Park.
B.
A lecture by a visiting professor.
C.
Her biology thesis.
D.
A research project.
【简答题】Segment 1 “She's a ________ kid. I've always been _________ of her. You know, it's a little _________ to let her go off to college.” Segment 2 “I don't want to ______ your feelings, but I'm like, I'm...
【简答题】阅读理解。 Lindsay hasn't felt like herself these days. Her friends have noticed it, too. Kia was surprised when Lindsay refused her invitation to go shopping last Saturday. There was really no reason (理由)...
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