【单选题】您如何把 "Persons" 表中 "LastName" 列的 "Gates" 改为 "Wilson" ?
A.
MODIFY Persons SET LastName='Wilson' WHERE LastName='Gates'
B.
UPDATE Persons SET LastName='Wilson' WHERE LastName='Gates'
C.
UPDATE Persons SET LastName='Wilson' INTO LastName='Gates'
D.
MODIFY Persons SET LastName='Wilson' INTO LastName='Gates'
【单选题】Why did China stop the import of feed from the European Union?
A.
Because it's a great waste of money.
B.
Because doing this can keep the disease from spreading in China.
C.
Because we must use our own feed.
【单选题】stop from,keep from和prevent from We should ( ) the widow from opening in the winter.
【简答题】【写作训练】 训练1:请依据下面的信息撰写一封邀请函 北京市商务委员会邀请各省、自治区、直辖市、计划单列市及生产建设兵团商务主管部门参加2015中国(北京)电子商务大会,相关材料如下,请参考去函模板,撰写一则邀请函: (1)致函事由:邀请参加2015中国(北京)电子商务大会 (2)致函事项: 自2011年以来,由商务部和北京市人民政府共同支持的中国(北京)电子商务大会(简称大会)已在京成功举办...
【简答题】所有的记账凭证都必须附有原始凭证。( )