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【单选题】
In the fourth paragraph, the author makes it clear that ______.A.
the government which is in charge of powers such as the making of laws must conduct the current affairs of the country but also think ahead and prepare the nation of tomorrow
B.
the nationals of any country are accountable for social choices they make
C.
the source of supply and wealth of any country can and will be consumed entirely if proper steps are not taken
D.
the people of any given country have a natural tendency to use unreservedly and unwisely their own resources
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【单选题】—Where________? —He has left a (n) ________ saying that he has something important to do. [ ]
A.
has Tom gone; message
B.
has Tom been; note
C.
will Tom go; word
D.
did Tom go; excuse
【单选题】现有客户表名为Clients,该表包含Email列（有效的email地址必须在@符号前至少有一个字符,".com"前@符号后至少有一个字符。）现需要查询出正确的Email地址的客户所有信息。应使用（ )T-SQL语句。
A.
select * from Clients where Email like ‘_ @_%.com’
B.
select * from Clients where Email like ‘%@%.com’
C.
select * from Clients where Email like ‘_%@_%.com’
D.
select * from Clients where Email like ‘_%@%.com’
【简答题】表示变量x和y相等的表达式是( )。
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