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有学生关系：学生(，姓名，年龄)，对学生关系的查询语句如下： SELECT FROM 学生WHERE年龄>20 AND 姓名 LIKE ′%′如果要提高查询效率，应该建索引的属性是﹝ ﹞
A.
B.
姓名
C.
年龄
D.
(，姓名)
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参考答案：
举一反三
【单选题】The citizens in Shanghai _______________ the highest building, Shanghai Tower, in the near future.
A.
is going to see
B.
will see
C.
sees
D.
see
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【单选题】Shah Jahan was apparently so pleased with the elegant mausoleum that he beheaded his chief architect, cut off the hands of the architect’s assistants, and blinded the draftsmen ; so that they would ne...
A.
people who actually put together the structures
B.
people who draw the plans for the structures to be built
C.
people who design and supervise the building of structures
查看完整题目与答案
【单选题】Learning a foreign language has changed. Not long ago, students would sit with pens in hand, writing the basic forms of a language, learning structures they would never be able to speak. In that same ...
A.
Learning a foreign language has changed. Not long ago, students would sit with pens in hand, writing the basic forms of a language, learning structures they would never be able to speak.
B.
In that same classroom today, pens and notebooks have been put away.
C.
Yet, just a few years ago, the last skill learned was the first skill ed today-- speaking a foreign tongue.
D.
To visit some foreign countries, travelers have to apply for visas.
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【判断题】Endeavor’s entrepreneurs believe that without Endeavor they would never be successful.
A.
正确
B.
错误
查看完整题目与答案
【单选题】.国家统计局7月15日发布半年经济数据,( )总值340637亿元,同比增长6.7%。分季度看,一季度同比增长6.7%,二季度同比增长6.7%。
A.
PPI
B.
GDP
C.
PMI
D.
GPI
查看完整题目与答案
【单选题】2015年7月15日国家统计局发布数据显示，上半年国内生产总值296868亿元，按可比价格计算，同比增长7.0%。下半年，我国仍将综合运用各种手段对国民经济进行宏观调控，以期实现预期的调控目标。下列调控目标、调控政策、具体措施三者对应最恰当的是（）
A.
控物价——稳健的货币政策——严控对高污染、高耗能产业的贷款
B.
稳增长——积极的财政政策——减轻服务业和小微企业的税收负担
C.
调结构——积极的财政政策——下调金融机构一年期存贷款基准利率
D.
惠民生——稳健的货币政策——加大对战略性新兴产业财政支持力度
查看完整题目与答案
【单选题】—Which city has __________ population, Shanghai, Hangzhou or Ningbo? ----Shanghai, of course.
A.
the smallest
B.
the least
C.
the most
D.
the largest
查看完整题目与答案
【简答题】Pandora 1 ________ was furious. Prometheus had tricked him, and the king of the gods wanted revenge. He also wanted to remind the humans that they would never be as powerful as the gods. So far, there...
查看完整题目与答案
【单选题】国家统计局7月15日发布半年经济数据，（）总值340637亿元，同比增长6.7%。分季度看，一季度同比增长6.7%，二季度同比增长6.7%。
A.
PPI
B.
CPI
C.
GDP
D.
PMI
查看完整题目与答案
【单选题】They would never be cross , or lazy, or selfish-and they would all help each other.
A.
sad
B.
pessimistic
C.
excited
D.
bad-tempered
查看完整题目与答案
相关题目：
【单选题】The citizens in Shanghai _______________ the highest building, Shanghai Tower, in the near future.
A.
is going to see
B.
will see
C.
sees
D.
see
查看完整题目与答案
【单选题】Shah Jahan was apparently so pleased with the elegant mausoleum that he beheaded his chief architect, cut off the hands of the architect’s assistants, and blinded the draftsmen ; so that they would ne...
A.
people who actually put together the structures
B.
people who draw the plans for the structures to be built
C.
people who design and supervise the building of structures
查看完整题目与答案
【单选题】Learning a foreign language has changed. Not long ago, students would sit with pens in hand, writing the basic forms of a language, learning structures they would never be able to speak. In that same ...
A.
Learning a foreign language has changed. Not long ago, students would sit with pens in hand, writing the basic forms of a language, learning structures they would never be able to speak.
B.
In that same classroom today, pens and notebooks have been put away.
C.
Yet, just a few years ago, the last skill learned was the first skill ed today-- speaking a foreign tongue.
D.
To visit some foreign countries, travelers have to apply for visas.
查看完整题目与答案
【判断题】Endeavor’s entrepreneurs believe that without Endeavor they would never be successful.
A.
正确
B.
错误
查看完整题目与答案
【单选题】.国家统计局7月15日发布半年经济数据,( )总值340637亿元,同比增长6.7%。分季度看,一季度同比增长6.7%,二季度同比增长6.7%。
A.
PPI
B.
GDP
C.
PMI
D.
GPI
查看完整题目与答案
【单选题】2015年7月15日国家统计局发布数据显示，上半年国内生产总值296868亿元，按可比价格计算，同比增长7.0%。下半年，我国仍将综合运用各种手段对国民经济进行宏观调控，以期实现预期的调控目标。下列调控目标、调控政策、具体措施三者对应最恰当的是（）
A.
控物价——稳健的货币政策——严控对高污染、高耗能产业的贷款
B.
稳增长——积极的财政政策——减轻服务业和小微企业的税收负担
C.
调结构——积极的财政政策——下调金融机构一年期存贷款基准利率
D.
惠民生——稳健的货币政策——加大对战略性新兴产业财政支持力度
查看完整题目与答案
【单选题】—Which city has __________ population, Shanghai, Hangzhou or Ningbo? ----Shanghai, of course.
A.
the smallest
B.
the least
C.
the most
D.
the largest
查看完整题目与答案
【简答题】Pandora 1 ________ was furious. Prometheus had tricked him, and the king of the gods wanted revenge. He also wanted to remind the humans that they would never be as powerful as the gods. So far, there...
查看完整题目与答案
【单选题】国家统计局7月15日发布半年经济数据，（）总值340637亿元，同比增长6.7%。分季度看，一季度同比增长6.7%，二季度同比增长6.7%。
A.
PPI
B.
CPI
C.
GDP
D.
PMI
查看完整题目与答案
【单选题】They would never be cross , or lazy, or selfish-and they would all help each other.
A.
sad
B.
pessimistic
C.
excited
D.
bad-tempered
查看完整题目与答案
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