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【单选题】
1996年 11 月，（ ）制定了《加强旅游行业精神文明建设的意见》，该意见第一次完整、系统地提出了主要由导游人员构成的旅游企业一线职工的道德规范，是第一个由官方制定和实施的旅游从业人员职业道德范本。A.
全国人大
B.
国务院
C.
国家旅游局
D.
全国人大常委会
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举一反三
【多选题】I presume that they are tired after a long ride. I assume that all of you will pass the CET-4 this year. What`s the difference between presume and assume ?
A.
To use assume, the assumption is usually based on reasonbale evidence.
B.
To use presume, the presumption is usually based on reasonbale evidence.
C.
To use assume, the assumption usually takes for granted.
D.
To use presume, the presumption usually takes something as true.
E.
To use assume, the assumption usually takes something as true.
F.
To use assume, the assumption is usually based on little or no evidence.
【单选题】在SQL的下列语句中,能够实现参照完整性约束的语句是( )
A.
foreign key
B.
primary key
C.
references
D.
foreign key 和 references
【单选题】在SQL的下列语句中，能够实现参照完整性约束的语句是（ ）
A.
CASCADE
B.
PRIMARY KEY
C.
CHECK
D.
FOREIGN KEY和REFERENCES
【单选题】在SQL的下列语句中,能够实现参照完整性约束的语句( )。
A.
FOREIGN KEY
B.
PRIMARY KEY
C.
REFERENCES
D.
FOREIGN KEY 和REFERENCES
【简答题】I assume that we _ _ _ by nine.
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