Things grow in Miggi's garden all through the year. He cuts some flowers for his sitting room table; and of course, he eats some fruits and vegetables. But he sells everything else in the market, Miggi is not a poor man.
He knows a few other gardeners; but he does not have any friends. You might ask, "What is that? Why doesn't he have friend?" I will tell you. People do not understand him. And they do not understand his garden. "Why not?" you will ask. "It's a very good garden, isn't it?" It is a wonderful garden. Miggi plants things in spring, summer, autumn and winter. After that he does very little work. He sits in the garden with his small radio. And eve rything grows.
People ask, "How does Miggi grow these wonderful things? He waters the plants some- times, but he doesn't do anything else. He just sits under an orange tree with his radio. He listens to music nearly all day!" and that is all quite true. People cannot understand it, and so they don't like it very much.
Miggi likes music. But what about the garden? Who does the work? I will tell you an- other true thing: the music does the work. All plants love music; and Miggi knows that. Do you want big vegetables and the loveliest flowers? Well, just give your plants a lot of music.
Miggi makes a living by______.
A.selling his vegetables, fruits and flowers
B.growing trees in his garden
C.working in the market
D.helping other people grow plants
第2题
下列问题的关系代数操作基本如下的关系R和S。
若关系R和S的关系代数的操作结果如下,这是执行了
A.
B.
C.
D.
第3题
A.R∞S
B.R∞S
C.R∞S
D.R∞S
第4题
下列问题的关系代数操作基本如下的关系R和S。
若关系R和S的关系代数的操作结果如下,这是执行了
A.
B.
C.
D.
第5题
下列问题的关系代数操作基本如下的关系R和S。
若关系R和S的关系代数的操作结果如下,这是执行了
A.
B.
C.
D.
第6题
第(32)~(33)题的关系代数操作是基于如下的关系R和S。
S
(32)若结果如下,这是对关系R和S执行了
第7题
下面两题的关系代数操作基于如下的关系R和S。
若关系R和S的关系代数的操作结果如下,这是执行了
A.
B.
C.
D.
第9题
下列问题的关系代数操作基于如下的关系R和S:
若关系R和S的关系代数操作的结果如下,这是执行了()。 [*]
A.R∞S
B.R∞S
C.R∞S
D.R∞S
第10题
若关系R和S的关系代数的操作结果如下,这是执行了(20)。
A.
B.R∩S
C.R-S
D.R÷S
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