As the song goes “ My future isn’t a dream ” I love the song which brings me confidence when singing it every time I believe that all our dreams can come true if we have courage to pursue them When I was young my father always asked me what I would be in the future Sometimes I found it very hard to give a certain reply “ I want to be a doctor ” “ I want to be a teacher ” and “ I ’d like to be a scientist !” Many of these answers are perhaps very childish and ridiculous But I never think they are far away How time flies! Who is able to give a definition to his future ? I know clearly that those high buildings are based on solid foundation As a student ， I should have a reasonable aim ， and study hard My goal is to enter the best university for further study after middle school I know it’s hard work ， and I ’ll come across many difficulties and frustrations But no matter what they are ， I’ll keep working on it and never give up My teacher says there ’s only one kind of people that are truly successful : those who are brave enough to put up with hardships Even if I won’t achieve the goal ， I have no regrets for what I have done ， for I have struggled for my life
Science and technology have been bringing human beings tremendous Thanks to science and technology, we now live comfortably and conveniently in houses furnished with air conditioners, refrigerators, washing machines and televisions Thanks to science and technology, we can eat fresh vegetables att the year Thanks to science and technology, we can travel tong distances in the fraction of a second on planes, trains and Thanks to science and technology, we wear clothes with synthetic materials which can not easily be worn However, science and technology have atso brought us a tot of First, because of the many breakthroughs in the field of medicine, people are now living much longer than they used As a result, the population of the world is increasing, causing tots of Second, because of the development of industry, tots of the wastes from factories pour into the air and rivers, causing pollution of att Third, some terrorists are using science and technology against They use biological, chemical and unclear weapons to threaten world So it's urgent that we find ways to solve these But we should not stop the development of science and technology because of these disasters they bring, just as we should not give up eating for fear of In addition, we should make some rules to regulate our As long as we use science and technology in a proper way, they may bring us even more
An environment is a complex of external factors that acts on a system and determines its course and form of An environment may be thought of as a superset, of which the given system is a An environment may have one or more parameters, physical or The environment of a given system must necessarily interact with that Generally, the environment or milieu of some object or action consists of the substances, circumstances, objects, or conditions by which it is surrounded or in which it (Although the two terms are usually synonyms, some sciences prefer the less common milieu to avoid confusion with the more well-known meanings of environment in ecology, politics, and ) Either word may be used with specialized meaning in various contexts: In biology, Environment may be defined as the complex of climatic, biotic, social and edaphic factors that acts upon an organism and determines its form and It, therefore, includes everything that may directly affect the metabolism or behavior of a living organism or species, including light, air, water, soil, and other living See environment (biology) In non-technical contexts, such as politics, it often refers to the natural environment, that part of the natural world that is deemed valuable or important by human beings, for any In literature, history, and sociology, it is the culture that an individual lives or was educated in, and the people and institutions with whom he interacts; see social In fiction, especially science fiction and fantasy it can refer to any fictional universe or setting in which different stories are Thus the Star Wars sagas are all in one milieu while the various Star Trek series, movies, and books are in a different This meaning is also relevant to fantasy roleplaying In any kind of organization or enterprise, it may also refer to the social and psychological conditions that are felt by its members; see work environment In any kind of meeting or congress, it may signify the prevailing mood or preferences of the In architecture, ergonomy, and work safety , it is the ensemble of elements of a room or building that affect the well-being and efficiency of its occupants—including dimensions and arrangement of living spaces and furniture, light, ventilation, temperature, noise, ; see living environment In thermodynamics, it refers to any objects that are not part of the system under study, and may receive or provide heat to it; see surroundings (thermodynamics) In chemistry and biochemistry, it is the chemical nature of a solution in which a reaction takes place, chiefly its pH ( whether it is acidic or alkaline) In metallurgy and ceramics, it often refers to the oxidizing or reductive character of the gases or flames prevailing during some high-temperature In computer science, it generally means data, processes or devices which, although not explicitly named as parameters of a computation, may nevertheless affect its In functional programming, lambda calculus, and programming languages, it usually means identifiers that are defined outside a given function but can be used in In other words, everything with global or otherwise non-local scope to that In certain operating systems like Unix, DOS, and Microsoft Windows, the environment is a set of environment variables in the form of var=value used by applications and libraries to affect default More generally, it may also mean the hardware and operating system on which a program is executed; see System See geography for a subject that is a study of the (Terms like SOSE (Studies of Society & the Environment) not only refer to environmental studies, but also social ) In psychology, environmentalism is the theory that environment (in the general and social sense) plays a greater role than heredity in determining an individual's 哈哈把分给我啦