问题 填空题

小轿车的速度为20km/h,先每小时减慢5km/h,若t小时后的速度为vkm/h,则v和t之间的关系式为______,______小时后速度为0.

答案

∵每小时减慢5km/h,

∴t小时减小的速度为5tkm/h,

∵轿车的速度为20km/h,

∴t小时后的速度为v=20-5t

令v=0得20-5t=0

解得:t=4,

故答案为:v=20-5t,4.

单项选择题 A1/A2型题
阅读理解

阅读理解

     The literal meaning of philosophy is "love of wisdom". But this meaning does not tell us very much.

Unlike the other disciplines,_philosophy cannot be defined by what you study, because it is actually

unlimited.Anything can be the subject matter of philosophy: history, law, language, literature, mathematics, and in fact, the other academic disciplines are directly related to philosophy.For this reason you get a

Doctorate (博士学位) of Philosophy (Ph.D.) in biochemistry, or computer science, or psychology.

     Two broad subfields of philosophy are logic and the history of philosophy.Logic is the science of

argument and critical thinking.It provides sound methods for distinguishing good from bad reasoning.The

history of philosophy involves the study of major philosophers and periods in the development of

philosophy.

     Of what use is philosophy? First it is useful in educational advancement.It is necessary for understanding other disciplines.Only philosophy questions the nature of the concepts used in a discipline, and its relation

to other disciplines.And through the study of philosophy, one develops sound methods of research and

analysis that can be applied to any field.

     There are a number of general uses of philosophy.It strengthens one's ability to solve problems, to

communicate, to organize ideas and issues, to persuade, and to take what is the most important from a

large quantity of data.These general uses are of great benefit in the career field, not necessarily for

obtaining one's first job after graduation, but for preparing for positions of responsibility, management and

leadership later on.It is very shortsighted after all, to take a course of studies only for the purpose of

getting one's first job.The useful skills developed through the study of philosophy have significant

longterm benefits in career advancement.No other discipline systematically follows the ideals of wisdom,

leadership, and capacity to resolve human conflict.

1. According to Paragraph 1, philosophy can best be described as the study of ________.

A. social sciences                      

B. natural sciences

C. both social and natural sciences        

D. the subject matter of politics

2. What does the underlined word "discipline" mean in the first paragraph?

A. Subject.  

B. Science.

C. Literature.  

D. Occupation.

3. With the study of philosophy, you can ________.

A. become a great leader

B. succeed in everything

C. find a good job soon after graduation

D. make progress in your career development

4. According to the passage, which of the following statements is TRUE?

A. Philosophy is an independent discipline.

B. Logic helps you to become a better thinker.

C. The study of philosophy brings you immediate benefits.

D. The meaning of philosophy is too limited to define.

5. From the passage, we can conclude ________.

A. not all the subjects have to do with philosophy

B. a person will get a Ph.D.if he/she studies philosophy

C. philosophy can be helpful for the study of any other subjects

D. philosophy is the only solution to all the problems in the world