问题 单项选择题

三段论:由两个含有一个共同项的性质判断作前提得出一个新的性质判断为结论的演绎推理。演绎推理是由普通性的前提推出特殊性结论的推理。根据以上定义,下列属于三段论的是:

A.所有的金属都不溶于水,铬是金属,所以铬不溶于水

B.所有的麻雀都有羽毛,所有的鸽子都有羽毛,所以所有的鸟都有羽毛

C.甲不是罪犯,乙不是罪犯,所以甲乙都不是罪犯

D.周恩来是伟大的政治家,周恩来是伟大的军事家,所以周恩来是伟大的政治家和军事家

答案

参考答案:A

解析:【解析】此题较易,“所有的金属都不溶于水”是大前提,即文中“普通性的前提”,“铬是金属”是小前提,“铬不溶于水”是特殊性结论。

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         1    You probably think you will never be a top student. This is not necessarily so, however.

Anyone can become a better student if he or she wants to. Here's how:

Plan your time carefully. When planning your work, you should make a list of things that you have to do.

After making this list, you should make a schedule of your time. First your time for eating, sleeping,

dressing, etc. Then decide a good, regular time for studying.     2   A weekly schedule may not solve all

your problems, but it will force you to realize what is happening to your time.

Find a good place to study. Look around the house for a good study area. Keep this space, which may

be a desk or simply a corner of your room, free of everything but study materials. No games, radios, or

television. When you sit down to study, concentrate on the subject.

Make good use of your time in class.     3    Listening carefully in class means less work later. Taking

notes will help you remember what the teacher says.

Study regularly. When you get home from school, go over your notes, review the important points that

your teacher is going to discuss the next day, read that material.    4  If you do these things regularly, the

material will become more meaningful, and you'll remember it longer.

Develop a good attitude towards tests. The purpose of a test is to show what you have learned about a

subject. They help you remember your new knowledge. The world won't end if you don't pass a test, so

don't be over worried. 

        5  You will probably discover them after you have tried these.

A. There are other methods that might help you with your studying.

B. Don't forget to set aside enough time for entertainment.

C. Take advantage of class time to listen to everything the teacher says.

D. No one can become a top student unless he or she works hard.

E. Maybe you are an average student.

F. Make full use of class time to take notes of what the teacher says in class.

G. This will help you understand the next class.