Man’s mind is his tool Of survival.The mind is used to gain，use，store，and recall knowled

ge.It is his mind that enables a famer t0 know what t0 plant，when to harvest it，how to prepare food from the result.It is his mind that enables a hunter to know what he needs to make a spear，how t0 make it，and how to use it.And it is his mind that enables a blacksmith to know how t0 make iron tools.In short，it i s the mind that enables a person to know what to d0 in order tOosurvive.

Man’s mind allows long—range planning and thinking.It enables such long—range planning as required for farming，hunting，and tool making.These efforts require the ability to form. concepts of long—term cause and effect chains.“I need t0 make a spear tonight SO I can hunt tomorrow and have food for the next 7 days.”There may be environments where people could survive for a while without long—range planning，but without the results 0f knowledge like spears，fire，and 0ther technologies，people would get out—bred by Other animals and die out。

Man’s mind is his tool for survival，but like all tools，it must be properly used.The mind makes good use 0f knowledge，and knowledge can only be 0btained through reason.Without reason，there is no knowledge，and thus no survival。

You must recognize reality and act in accordance with it in order t0 be successful.To the extent that you use reason as your method of judgment in knowledge and action，you will survive and flourish .If you ignore or escape form. reality you will suffer and die.

It is very important t0 note that survival by reason requires the freedom to act according t0 your reason.That is why people d0 not develop well in the control of others，and can not survive when they are subject t0 foree that destroys their ability to act on reason.

26.It is his mind that enables a farmer t0 know how to_______.

A.make spears

B.hunt for animals

C.make iron tools

D.cultivate crops

27.The first two paragraphs show that man’s mind______.

A. is his basic means Of survival

B. enables him to act at will

C. is used to protect themselves

D. helps him 100k int0 reality

28. In order to survive，man should_______.

A.be conquered by 0thel"allimals

B.make a long—range plan for the future

C.1earn to recall knowledge

D.1earn to think reasonably

29.Without the results Of knowledge like spears，fire，and Other technologies，people_____.

A.Could only survive for7 days

B.would kill off a11 the animals

C.would be controlled by 0thers

D.would disappear from the earth

30.It is reasonable that if people want to survive，they should______.

A.develop well in the control of others

B.ignore or escape from reality

C.have freedom to act on reason

D.be subject to certain environments