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【简答题】
数据库系统的数据独立性体现在( )。 A、不会因为数据的变化而影响到应用程序 B、不会因为数据存储结构与数据逻辑结构的变化而影响应用程序 C、不会因为存储策略的变化而影响存储结构 D、不会因为某些存储结构的变化而影响其他的存储结构
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举一反三
【单选题】We can know that before 1995 Mary 。
A.
had two books published
B.
received many career awards
C.
knew how to use a computer
D.
supported the JDRF by writing
【简答题】Like many lovers of books, Mary and her husband, Richard Goldman, seldom walked past a bookstore without stopping to look inside. They often talked of opening their own store one day. When Mary was ho...
【简答题】Like many lovers of books, Mary and her husband, Richard Goldman, seldom walked past a bookstore without stopping to look inside. They often talked of opening their own store one day. When Mary was in...
【单选题】Three books by Mary.
A.
has been written
B.
have been written
C.
was written
D.
were written
【单选题】In order to catch up with her classmates, _____.
A.
a lot of books were bought by Mary’s mother
B.
Mary’s father helped her with her lessons
C.
Mary worked hard at her lessons around the clock
D.
Mary’s classmates helped her a lot
【单选题】—Mary likes reading books.
A.
Jane likes also
B.
So Jane does
C.
Also does Jane
D.
So does Jane
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