An Essential Scientific ProcessAll life on the earth depends upon green plants. Using sunlight, theplants produce their own food. Then animals feed upon the plants. They take inthe nutrients the plants have made sted. But that’s not all.Sunlight also helps a plant produce oxygen. Some of the oxygen is used by theplant, but a plant usually produces me oxygen than it uses. The excess oxygenis necessary f animals other ganisms to live.The process of changing light into food oxygen is calledphotosynthesis. Besides light energy from the sun, plants also use water carbon dioxide. The water gets to the plant through its roots. The carbondioxide enters the leaves through tiny openings called stomata. The carbondioxide travels to chloplasts, special cells in the bodies of green plants.This is photosynthesis takes place. Chloplasts contain the chlophyllsthat give plants their green col. The chlophylls are the molecules thattrap light energy. The trapped light energy changes water carbon dioxide toproduce oxygen a simple sugar called glucose.Carbon dioxide oxygen move into out of the stomata. Watervap also moves out of the stomata. Me than 90 percent of water a planttakes in through its roots escapes through the stomata. During the daytime, thestomata of most plants are open. This allows carbon dioxide to enter the leavesf photosynthesis. As night falls, carbon dioxide is not needed. The stomataof most plants close. Water loss stops.If photosynthesis ceased, there would be little food other ganicmatter on the earth. Most ganisms would disappear. The earth’s atmospherewould no longer contain oxygen. Photosynthesis is essential f life on ourplanet. 词汇：nutrient n.营养物 ganism n.生物体，有机体carbon dioxide n.二氧化碳chloplast n.叶绿体molecule n.分子vap n.水蒸气oxygen n.氧气 photosynthesis n.光合作用chlophyll n.叶绿素glucose n.葡萄糖cease v.停止 注释：1.Then animals feed upon the plants.动物以植物为食。 练习：2.Which of the following does not move through a plant’s stomata?A.Carbon dioxide. B.Water vap.C.Oxygen. D.Food.
An Essential Scientific Process
All life on the earth depends upon green plants. Using sunlight, theplants produce their own food. Then animals feed upon the plants. They take inthe nutrients the plants have made sted. But that’s not all.Sunlight also helps a plant produce oxygen. Some of the oxygen is used by theplant, but a plant usually produces me oxygen than it uses. The excess oxygenis necessary f animals other ganisms to live.
The process of changing light into food oxygen is calledphotosynthesis. Besides light energy from the sun, plants also use water carbon dioxide. The water gets to the plant through its roots. The carbondioxide enters the leaves through tiny openings called stomata. The carbondioxide travels to chloplasts, special cells in the bodies of green plants.This is photosynthesis takes place. Chloplasts contain the chlophyllsthat give plants their green col. The chlophylls are the molecules thattrap light energy. The trapped light energy changes water carbon dioxide toproduce oxygen a simple sugar called glucose.
Carbon dioxide oxygen move into out of the stomata. Watervap also moves out of the stomata. Me than 90 percent of water a planttakes in through its roots escapes through the stomata. During the daytime, thestomata of most plants are open. This allows carbon dioxide to enter the leavesf photosynthesis. As night falls, carbon dioxide is not needed. The stomataof most plants close. Water loss stops.
If photosynthesis ceased, there would be little food other ganicmatter on the earth. Most ganisms would disappear. The earth’s atmospherewould no longer contain oxygen. Photosynthesis is essential f life on ourplanet.
词汇：
nutrient n.营养物
ganism n.生物体，有机体
carbon dioxide n.二氧化碳
chloplast n.叶绿体
molecule n.分子
vap n.水蒸气
oxygen n.氧气
photosynthesis n.光合作用
chlophyll n.叶绿素
glucose n.葡萄糖
cease v.停止
注释：
1.Then animals feed upon the plants.动物以植物为食。
练习：
2.Which of the following does not move through a plant’s stomata?
A.Carbon dioxide.
B.Water vap.
C.Oxygen.
D.Food.
All life on the earth depends upon green plants. Using sunlight, theplants produce their own food. Then animals feed upon the plants. They take inthe nutrients the plants have made sted. But that’s not all.Sunlight also helps a plant produce oxygen. Some of the oxygen is used by theplant, but a plant usually produces me oxygen than it uses. The excess oxygenis necessary f animals other ganisms to live.
The process of changing light into food oxygen is calledphotosynthesis. Besides light energy from the sun, plants also use water carbon dioxide. The water gets to the plant through its roots. The carbondioxide enters the leaves through tiny openings called stomata. The carbondioxide travels to chloplasts, special cells in the bodies of green plants.This is photosynthesis takes place. Chloplasts contain the chlophyllsthat give plants their green col. The chlophylls are the molecules thattrap light energy. The trapped light energy changes water carbon dioxide toproduce oxygen a simple sugar called glucose.
Carbon dioxide oxygen move into out of the stomata. Watervap also moves out of the stomata. Me than 90 percent of water a planttakes in through its roots escapes through the stomata. During the daytime, thestomata of most plants are open. This allows carbon dioxide to enter the leavesf photosynthesis. As night falls, carbon dioxide is not needed. The stomataof most plants close. Water loss stops.
If photosynthesis ceased, there would be little food other ganicmatter on the earth. Most ganisms would disappear. The earth’s atmospherewould no longer contain oxygen. Photosynthesis is essential f life on ourplanet.
词汇：
nutrient n.营养物
ganism n.生物体，有机体
carbon dioxide n.二氧化碳
chloplast n.叶绿体
molecule n.分子
vap n.水蒸气
oxygen n.氧气
photosynthesis n.光合作用
chlophyll n.叶绿素
glucose n.葡萄糖
cease v.停止
注释：
1.Then animals feed upon the plants.动物以植物为食。
练习：
2.Which of the following does not move through a plant’s stomata?
A.Carbon dioxide.
B.Water vap.
C.Oxygen.
D.Food.
参考解析
解析：2.D 从第三段的第一、二句得知，二氧化碳、氧气和水蒸气都能从气孔中通过，唯一一个没有提到的是food“养分、食物”，因此该题选D项。
相关考题：
Including the customer in the process of project planning is:A.Slow and counterproductive.B.Essential in the definition and documentation of project goals.C.Necessary, but of limited value.D.Unnecessary because project goals are defined in the proposal stage.E.None of the above.
● Including the customer in the process of project planning is:A Slow and counterproductive.B Essential in the definition and documentation of project goals.C Necessary, but of limited value.D Unnecessary because project goals are defined in the proposal stage.E None of the above.
According to the text, online publication is significant in that[A] it provides an easier access to scientific results.[B] it brings huge profits to scientific researchers.[C] it emphasizes the crucial role of scientific knowledge.[D] it facilitates public investment in scientific research.
请分析以下程序。 int main() { pid_t pid; pid = fork(); if(pid==0) printf("I am the child process, my process ID is%d\n",getpid()); else printf("I am the parent process, my process ID is%d\n",getpid());} 那么，该程序正确运行后的结果是A.I am the child process, my process ID is 3744 I am the parent process, my process ID is 3987B.I am the child process, my process ID is 3744C.I am the parent process, my process ID is 3987D.不输出任何信息
According to the text, online publication is significant in thatA．it provides an easier access to scientific results.B．it brings huge profits to scientific researchers.C．it emphasizes the crucial role of scientific knowledge.D．it facilitates public investment in scientific research.
.Waterandairare_______tohumanbeings.Wecannotlivewithoutthem.A.harbourB.functionC.definiteD.essential
When a process is in control, what do you want to do with the process?（）.A.The process should not be adjustedB.The process may be adjusted for continuous improvementC.The process should be always adjusted for continuous qualityD.The process should be regularly adjusted
The author writes of the development of geology to demonstrate _______.A the process of specialisation and professionalisationB the hardship of amateurs in scientific studyC the change of policies in scientific publicationsD the discrimination of professionals against amateurs
Text 3 In the idealized version of how science is done,facts about the world are waiting to be observed and collected by objective researchers who use the scientific method to carry out their work.But in the everyday practice of science,discovery frequently follows an ambiguous and complicated route.We aim to be objective,but we cannot escape the context of our unique life experience.Prior knowledge and interest influence what we experience,what we think our experiences mean,and the subsequent actions we take.Opportunities for misinterpretation,error,and self-deception abound.Consequently,discovery claims should be thought of as protoscience.Similar to newly staked mining claims,they are full of potential.But it takes collective scrutiny and acceptance to transform a discovery claim into a mature discovery.This is the credibility process,through which the individual researcher’s me,here,now becomes the community’s anyone,anywhere,anytime.Objective knowledge is the goal,not the starting point.Once a discovery claim becomes public,the discoverer receives intellectual credit.But,unlike with mining claims,the community takes control of what happens next.Within the complex social structure of the scientific community,researchers make discoveries;editors and reviewers act as gatekeepers by controlling the publication process;other scientists use the new finding to suit their own purposes;and finally,the public（including other scientists）receives the new discovery and possibly accompanying technology.As a discovery claim works it through the community,the interaction and confrontation between shared and competing beliefs about the science and the technology involved transforms an individual’s discovery claim into the community’s credible discovery.Two paradoxes exist throughout this credibility process.First,scientific work tends to focus on some aspect of prevailing Knowledge that is viewed as incomplete or incorrect.Little reward accompanies duplication and confirmation of what is already known and believed.The goal is new-search,not re-search.Not surprisingly,newly published discovery claims and credible discoveries that appear to be important and convincing will always be open to challenge and potential modification or refutation by future researchers.Second,novelty itself frequently provokes disbelief.Nobel Laureate and physiologist Albert Azent-Gyorgyi once described discovery as“seeing what everybody has seen and thinking what nobody has thought.”But thinking what nobody else has thought and telling others what they have missed may not change their views.Sometimes years are required for truly novel discovery claims to be accepted and appreciated.In the end,credibility“happens”to a discovery claim–a process that corresponds to what philosopher Annette Baier has described as the commons of the mind.“We reason together,challenge,revise,and complete each other’s reasoning and each other’s conceptions of reason.”35.Which of the following would be the best title of the test?A.Novelty as an Engine of Scientific Development.B.Collective Scrutiny in Scientific Discovery.C.Evolution of Credibility in Doing Science.D.Challenge to Credibility at the Gate to Science.
An Essential Scientific ProcessAll life on the earth depends upon green plants. Using sunlight, theplants produce their own food. Then animals feed upon the plants. They take inthe nutrients the plants have made sted. But that’s not all.Sunlight also helps a plant produce oxygen. Some of the oxygen is used by theplant, but a plant usually produces me oxygen than it uses. The excess oxygenis necessary f animals other ganisms to live.The process of changing light into food oxygen is calledphotosynthesis. Besides light energy from the sun, plants also use water carbon dioxide. The water gets to the plant through its roots. The carbondioxide enters the leaves through tiny openings called stomata. The carbondioxide travels to chloplasts, special cells in the bodies of green plants.This is photosynthesis takes place. Chloplasts contain the chlophyllsthat give plants their green col. The chlophylls are the molecules thattrap light energy. The trapped light energy changes water carbon dioxide toproduce oxygen a simple sugar called glucose.Carbon dioxide oxygen move into out of the stomata. Watervap also moves out of the stomata. Me than 90 percent of water a planttakes in through its roots escapes through the stomata. During the daytime, thestomata of most plants are open. This allows carbon dioxide to enter the leavesf photosynthesis. As night falls, carbon dioxide is not needed. The stomataof most plants close. Water loss stops.If photosynthesis ceased, there would be little food other ganicmatter on the earth. Most ganisms would disappear. The earth’s atmospherewould no longer contain oxygen. Photosynthesis is essential f life on ourplanet. 词汇：nutrient n.营养物 ganism n.生物体，有机体carbon dioxide n.二氧化碳chloplast n.叶绿体molecule n.分子vap n.水蒸气oxygen n.氧气 photosynthesis n.光合作用chlophyll n.叶绿素glucose n.葡萄糖cease v.停止 注释：1.Then animals feed upon the plants.动物以植物为食。 练习：3.In the title, the term Essential Scientific Process refers toA.photosynthesis.B.the fmation of glucose.C.global warming.D.water getting to the roots of plants.
The author suggests that the approach of physicists to solving scientific problems is which of the following？( ) A.Practical for scientific purposes. B.Detrimental to scientific progress. C.Unimportant in most situations. D.Expedient，but of lttle long-term value.
The author suggests that the approach of physicists to solving scientific problems is which of the following？( ) A.Practical for scientific purposes B.Detrimental to scientific progress C.Unimportant in most situations D.Expedient，but of lttle long-term value
Django中间件支持的方法有？（）A、process_responseB、process_requestC、process_template_responseD、process_exception
备用电源系统（ABEX,HMG,SEP)向什么汇流条供电？A、Essential DC bus(Using the TRU)B、Essential AC bus(Using the E-inverter)C、Essential DC bus(Using the TRU)和Essential AC bus(Using the E-inverter)D、Essential DC bus(Using the E-inverter)和Essential AC bus(Using the TRU)
E－inverter向哪个汇流条供电？A、Essential AC busB、Essential DC busC、Essential AC busEssential DC busD、左，右主交流汇流条
单选题In what way advertising is changed according to the text?AAdvertisements are produced in a scientific way.BMore research methods are used in creative work.CAll decisions are made based on the results of research.DFocus groups now control the whole process of ad-making.
单选题The word “resolution” underlined in Paragraph 5 probably means.Aa firm decisionBthe process of breaking up into partsCan act of resolvingDthe power of a scientific instrument to give a clear picture of things
单选题The author considers a new scientific theory to be the ______.Abasis for reaffirming a well-established scientific formulationBbyproduct of an aesthetic experienceCtool used by a scientist to discover a new particularDresult of highly creative scientific activity
单选题According to lines 50－58 of Passage 2, microevolution ______.Ahas never actually been observed, but is believed to be theoretically possibleBis the series of small changes that transforms one species into anotherClacks evidence, and therefore should not be considered a scientific factDis an evolutionary process involving small changes within a speciesEoccurs wherever there are environmental changes in a species' habitat
单选题The ship security assessment is an essential and integral part of the process of developing and updating（）Athe ship security planBthe company security planCthe port security planDthe national security plan
单选题The author implies that an innovative scientific contribution is one that ______.Ais accepted immediately by the scientific communityBdies not relegate particulars to the role of dataCpresents a new scientific factDintroduces a new valid generalization
单选题According to the passage, “scientific subculture” means _____.Acultural groups that are formed by scientistsBpeople whose knowledge of science is very limitedCthe scientific communityDpeople who make good contribution to science