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【简答题】
用SQL语句创建如下三张表:学生(Student),课程表(Course),和学生选课表(SC),这三张表的结构如表1-1到表1-3所示。 表1-3 SC表结构 列名 说明 数据类型 约束 Sno 学号 字符串,长度为7 主码,引用Student的外码 Cno 课程名 字符串,长度为10 主码,引用Course Grade 成绩 整数 取值0~100
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举一反三
【单选题】In the eyes of the author, what happens to a scholar who shares his ideas with his colleagues?______.
A.
He risks his ideas being stolen.
B.
He gains recognition for his achievement.
C.
He is considered as an eccentric.
D.
He is credited with a startling discovery.
【单选题】______, some people think there is something in them.
A.
His ideas may sound crazy
B.
As his ideas may sound crazy
C.
Crazy as his ideas may sound
D.
As crazy his ideas may sound
【单选题】The playwright was known not for his original ideas but for his ______ of ideas that had been propounded by others.
A.
invention
B.
reiteration
C.
consideration
D.
rejection
【简答题】1-m sure that he'll change his ideas．（改为同义句） He______ ______ ______ ______his ideas，
【单选题】He traveled to the Northern part of the country, ______ he got many new ideas for this book.
A.
which
B.
there
C.
where
D.
that
【简答题】Great as Newton was, many of his ideas ____________ today and are being modified by the work of scientists of our time. A) are to challenge B) may be challenged C) have been challenged D) are challeng...
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