Man has a blood tie with nature and nobody can live outside nature. Nature provides us with we need: the air we breathe, the water we drink, and the food we eat. For quite a long time after man began to live in the________(1)of nature, he livedin fear of its destructive forces. he used to regard nature with its________(2)forces as something hostile to him. And even the forest was something wild and frightening to him. very often ,he was unable to________(3)the merest daily necessities though heworked together with others________(4)and collectively with his imperfect tools , through his interaction with nature , manchanged it gradually . he cut down forest , cultivated land ,________(5)various species of plants and animals to different climatic conditions, changed the shape and climate of his environment and________(6)pants and animals. he________(7)and disciplinedelectricity and compelled it to serve the interests of society. Nonetheless , with the constant________(8)of agriculture andindustry , man has robbed nature of too much of its________________(9)resources , polluted his own living environment and causedabout 95% of the species that have existed over the past600 million years to become________(10)and still many others to be endangered . the previous________(11)balance between man and nature is on the________(12)of breaking down . man is now faced with the problem of how to stop , or at least to________(13)the destructive effect of technology on nature . The crisis of the________(14)situation has become a global problem .the solution to the problem depends on________(15)and wise organization both of production itself and care for mother nature . this can only be done by all humanity , rather than by individuals , enterprises or separate countries.Close3According to craigRussell , when we make an initial effort in our personal quests for knowledge , we may not even know that a certain field of learning exists . but , after we have done some reading ,we will get to know more about the________(1).at the same time ,we may feel that all the reading________(2)more questions rather than answers them . we then realize how little we________(3)know and how much more we need to read and think and write . Russell suggests that we write after reading each time .his experience tells him that it is his writing that has led him to acquire a better________(4)of the topic he studies . people may think that only those who know and who are________(5)of themselves write . for Russell , however , it’s just the________(6),for writing doesn’t close things off ----it opens things up . To say that the more we know , the more we know we don’t know seems________(7).according to Russell , modern physics tells us that________(8)itself is contradictory . the more closely scientists look into our________(9)reality , the more it slips away from . in a way , the more they learn , the less they know . Craig Russell believes that a proper understanding will inevitably lead us away from the force and________(10)of dogmatism and toward the flexibility and freedom of the________(11). Therefore, we must temper our pride in knowing with the________(12)of not knowing. the truth always exists there ,but , it is like the________(13)because we can never really grasp it , never hold it in our hands and truly know it . we can only , as William james said , “live today by what truth we can get today and be ready to call it________(14)tomorrow.”Close6 .Truth is a fact accept as true, for which proof exists .Truth is a great principle , without which beauty may fade and love may________(1). Those who uphold truth have a strong________(2)of responsibility. Those who hold firmly to truth are________(3)to their duty and the people they serve .they________(4)themselves to the well-being of others. With________(5)to make a contribution to society, they are ready to correct their own mistakes , If any . it can be said that they are men of moral integrity who never ask for________(6)in return. Truth________(7)upon us slowly but surely .in the long quest for truth, people have________(8)precious knowledge and experience. However, truth also needs________(9)just as plants need water, because many people are too________(10)with petty and sometimes even mean concerns to respond to the great beauty of truth when it________(11)or they frequently fail to appreciate truth when it is________(12)In short, truth is an invaluable asset to the whole of humanity. Stick to the truth and we will________(13)a timeless pattern, and earn the respect and esteem of others ,________(14)the world today above its present imperfections and place ourselves in the proud position of promoting the good of the humanity.Close7.we often hear people say，time is money .But today many Americans have come to realize that the crazy pursuit of money is leavings them too little time to enjoy life .they are tired of working just for the________(1)of life and beginning to change their fast-paced lifestyles for a simple and________(2)one ,hoping to keep family ,friends, work and play all of a piece . For some people, creating a more balanced life involves changing jobs o locations .For others, it means________(3)two incomes for one, in which case they must________(4)expenses. So some have sold out their________(5)homesick and moved into smaller houses. They have given up the extra cars, unnecessary modern conveniences, and expensive________(6).They now do things by themselves to avoid paying for the services of others .They resist the temptation to purchase things on________(7)and spend money only on________(8)necessities and things that do not make________(9)use of the earth's resources . However ,they do not________(10)themselves what they like or enjoy .The change in their lifestyle is not one involving________(11);it is just simplification .They believe that they can still live a happy and fulfilling life on less money .Indeed ,whether we________(12)a healthy lifestyle or not does not depend on how wealthy we are but on whether we have the________(13)and courage to discard our old________(14)habits .Close8.The story of an Hour leaves us much to think about . In the story ,when Richardson ,who worked in the newspaper office ,learned that his friend Brently Mallard had been killed in a railroad________(1), he was greatly shocked .he only waited until he was________(2)by a second telegram and then he________(3)to go to Josephine ,sister of Brently's wife ,and asked her to break the news as________(4)as possible to her sister because he knew MRS. Mallard was________(5)with a heart trouble .He was afraid that if someone less________(6)brought the message to her ahead of him ,there might be dreadful consequences. People usually expect a wife to accept such sad news with a________(7)inability ,but MRS.MALLARD did not .At the news ,she wept at once ,with sudden ,wild________(8)in her sister's arms ,and then she went to her own room ,forbidding anyone else to go in. When she was alone ,she felt something________(9)coming to her ,which gradually came to her mind ,beginning to________(10)her. Hard as she tried ,she couldn't get rid of the feeling .What was it ?She didn't know .However ,a clear and excited________(11)occupied her which made her regard her husband's death no longeron as something important ,because beyond that bitter moment she saw a long________(12)of years to come that would belong to her absolutely ,during which her husband would not________(13)his will upon her any more . Just at that moment ,her husband came back ,________(14)carrying his briefcase and umbrella .Seeing him ,she died of a sudden heart attack .