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【单选题】
以下SQL语句实现的功能是__ _。Update 课程表Set 学分=学分+1 Where学分>2A.
查找课程表中学分增加 1 分后还小于 2 学分的课程
B.
修改课程表中的学分字段，将其字段名称改为“学分 +1 ”
C.
将学分不大于 2 分的所有课程的学分上调 1 分
D.
以上都不对
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举一反三
【单选题】Though great efforts have been on their study , Annie still can’t make any improvements , which makes her parents greatly ______ .
A.
made ; disappointed
B.
done ; disappointing
C.
taken ; disappointed
D.
given ;disappointing
【单选题】According to the author, most people realize that______.
A.
great efforts have been made to solve the energy problem
B.
the automobile uses large amounts of gasoline
C.
car pools help to solve some of the energy problem
D.
alternate sources of energy must be found
【单选题】Great efforts have been made to ________the diplomatic relations between the two countries.
A.
normalize
B.
modernize
C.
mechanize
D.
standardize
【单选题】Scientists have found no ________of life on Mars so far,though great efforts have made on the research.
A.
symbols
B.
signs
C.
marks
D.
signals
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