Wh/2)下标
A:峰面积 B:峰高 C:保留时间 D:峰宽 E:半高峰宽(分隔符)色谱柱理论塔板数计算公式n=5.54(tR／Wh/2)中，各符号的含义是
The Beginning of American Literature
American has always been a land of beginnings. After Europeans “ discovered” Americain the fifteenth century, the mysteriousNew Worldbecame for many people a genuine hope of a new life, an escape from poverty and persecution, a chance to start again. We can say that, as nation,Americabegins with that hope. When, however, does American literature begin?
American literature begins with American experiences. Long before the first colonists arrived, before Christopher Columbus 1, before the Northmen who foundAmericaabout year 1,000, Native Americans lived here. Each tribe"s literature was tightly woven into the fabric of daily life and reflected the unmistakably American experience of lining with the land 2. Another kind of experience, one filled with fear and excitement, found its expression in the reports that Columbus and other explorers sent home inSpain, French and English. In addition, the journals of the people who lived and died in theNew Englandwilderness 3 tell unforgettable tales of hard end sometimes heartbreaking experiences of those early years.
Experience, then, is the key to early American literature. TheNew Worldprovided a great variety of experiences, and experiences demanded a wide variety of expressions by an even wider variety of early American writers. These writers included John Smith, who spent only two-and-a-half year: on the American, continent. They included Jonathan Edwards and William Byrd，who thought of themselves as British subjects, never suspecting a revolution that would create a United States of America with a literature of its own. American Indians, explorers,
Puritan ministers, frontier wives, plantation owner一they are all the creators of the first American literature.
词汇：
colonist [ˈkɒlənɪst] n.殖民者
subject ["sʌbdʒɪkt] n.臣民
puritan [ˈpjʊərɪtən] n.清教徒的
注释：
1．Christopher Columbus:克里斯托弗·哥伦布，美洲新大陆的发现者
2. Each tribe"s literature was tightly woven into the fabric of daily life and reflected the unmistakably American experience of lining with the land.每个部落的文学都紧密地交织到日常生活的架构中去，反映了和土地密切相连的确凿无疑的美洲生活经历。
3．New England wilderness:新英格兰的荒原，新英格兰指如今美国东北部的几个州，为来自欧洲的殖民者最早定居的地区。
The main purpose of the last paragraph is to tell the readers that____.
A:in the early days most American writers were from Great Britain. B:people with rich life experiences became writers C:there were many writers in the early days of American history D:early-day expenence provided the foundation for American literature
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The purpose of writing these four texts is to ______.
A:tell the readers the latest news B:get more readers to subscribe (订阅) C:show the importance of the four magazines D:introduce the four magazines to new readers
(31)到(35)题使用下列数据表。
“仓库”表 仓库号 所在地
WH2 北京
WH2 上海
WH3 广州
WH4 天津
“职工”表 职工号 仓库号 工资
E1 WH1 2100
E2 WH2 1500
E3 WH3 1350
E4 WH1 1850
E5 WH3 1900
E6 WH1 2000
E7 WH4 1450
E8 WH2 1200
E9 WH1 1600
执行下列SQL语句后，显示查询到的仓库号有( )。
SELECT DISTINCT 仓库号 FROM 职工 WHERE 工资＞=ALL;
(SELECT 工资 FROM 职工 WHERE 仓库号="WH3")
A:WH1 B:WH2 C:WH4 D:WH1、WH3
(31)～(35)题使用下列数据表。
“仓库”表 仓库号 所在地
WH2 北京
WH2 上海
WH3 广州
WH4 天津
“职工”表 职工号 仓库号 工资
E1 WH1 2100
E2 WH2 1500
E3 WH3 1350
E4 WH1 1850
E5 WH3 1900
E6 WH1 2000
E7 WH4 1450
E8 WH2 1200
E9 WH1 1600
执行下列SQL语句后，显示查询到的仓库号有( )。
SELECT DISTINCT 仓库号 FROM 职工 WHERE 工资＞=ALL; (SELECT 工资 FROM 职工 WHERE 仓库号="WH3")
A:WH1 B:WH2 C:WH4 D:WH1、WH3
以下各题使用下列数据表。
“仓库”表 仓库号 所在地
WH2 北京
WH2 上海
WH3 广州
WH4 天津
“职工”表 职工号 仓库号 工资
E1 WH1 2100
E2 WH2 1500
E3 WH3 1350
E4 WH1 1850
E5 WH3 1900
E6 WH1 2000
E7 WH4 1450
E8 WH2 1200
E9 WH1 1600
执行下列SQL语句后，显示查询到的仓库号有( )。
SELECT DISTINCT 仓库号 FROM 职工 WHERE 工资＞=ALL
(SELECT 工资 FROM 职工 WHERE 仓库号="WH3")
A:WH1 B:WH2 C:WH4 D:WH1、WH3
(31)～(35)题使用下列数据表。
“仓库”表 仓库号
所在地
WH2 北京
WH2 上海
WH3 广州
WH4
天津
“职工”表 职工号 仓库号 工资
E1
WH1 2100
E2 WH2 1500
E3
WH3 1350
E4 WH1 1850
E5
WH3 1900
E6 WH1 2000
E7
WH4 1450
E8 WH2 1200
E9
WH1 1600 |
执行下列SQL语句后，显示查询到的仓库号有( )。
SELECT DISTINCT 仓库号 FROM 职工 WHERE 工资＞=ALL; (SELECT 工资 FROM 职工 WHERE 仓库号="WH3")
A:WH1 B:WH2 C:WH4 D:WH1、WH3
(31)到(35)题使用下列数据表。
“仓库”表
仓库号 所在地
WH2 北京
WH2
上海
WH3 广州
WH4
天津
“职工”表 职工号 仓库号
工资
E1 WH1
2100
E2 WH2
1500
E3 WH3
1350
E4 WH1
1850
E5 WH3
1900
E6 WH1
2000
E7 WH4
1450
E8 WH2
1200
E9 WH1
1600 |
执行下列SQL语句后，显示查询到的仓库号有( )。 SELECT DISTINCT 仓库号 FROM 职工 WHERE 工资＞=ALL； (SELECT 工资 FROM 职工 WHERE 仓库号=“WH3”)
A:WH1 B:WH2 C:WH4 D:WH1、WH3
(31)到(35)题使用下列数据表。
“仓库”表
仓库号 所在地
WH2 北京
WH2 上海
WH3 广州
WH4
天津
“职工”表 职工号 仓库号 工资
E1
WH1 2100
E2 WH2 1500
E3
WH3 1350
E4 WH1 1850
E5
WH3 1900
E6 WH1 2000
E7
WH4 1450
E8 WH2 1200
E9
WH1 1600 |
执行下列SQL语句后，显示查询到的仓库号有( )。 SELECT DISTINCT 仓库号 FROM 职工 WHERE 工资＞=ALL; (SELECT 工资 FROM 职工 WHERE 仓库号="WH3")
A:WH1 B:WH2 C:WH4 D:WH1、WH3
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