四级Their babies retain the ability to produce their own chlorophyll, though they can't generate energy from sunlight until they've eaten enough algae to steal the necessary genes, which they can't yet produce on their own.
他们的孩子保留了自己产生叶绿素的能力，尽管他们在吃了足够多的海藻以窃取必要的基因之前无法从阳光中产生能量，而这些基因是他们自己还无法产生的。
2019年12月四级真题（第三套）阅读 Section C
高考For many students, Wilson's help is not only appreciated, it's also entirely necessary for them to be able to complete their college education.
对许多学生来说，威尔逊的帮助不仅值得赞赏，而且对他们完成大学教育也是完全必要的。
2019年高考英语北京卷 完形填空 原文
高考Every college discussion about community values, social climate and behavior should include recognition of the developmental importance of student autonomy and self-regulation, of the necessary tension between safety and self-discovery.
每所大学关于社区价值观、社会氛围和行为的讨论都应该包括承认学生自主和自我调节的发展重要性，以及安全和自我发现之间必要的紧张关系。
2016年高考英语北京卷 阅读理解 阅读D 原文
四级Adults tend to talk about learning as if it were medicine: unpleasant, but necessary and good for you.
成年人在谈论学习时往往把它当作一剂良药：不愉快，但却是必要的，而且对你有益。
2015年12月阅读原文
六级Throughout these series, you will learn more about the profession, the necessary steps to get a social work degree, the rich history of social work and many ways that social workers help others.
在本系列中，您将了解更多有关社会工作的专业知识、获得社会工作学位的必要步骤、丰富的社会工作历史以及社会工作者帮助他人的许多方式。
2016年12月听力原文
六级One analyst suggests it is necessary to accept both the positive and negative aspects of innovative products.
一位分析师建议，有必要接受创新产品的积极和消极方面。
2016年12月阅读原文
六级While we argue phasing out racial terminology ( ' , 术语 ) in the biological sciences, we also acknowledge that using race as a political or social category to study racism, although filled with lots of challenges, remains necessary given our need to understand how structural inequities and discrimination produce health disparities ( ' , 差异 ) between groups, Yudell said.
虽然我们主张逐步淘汰种族术语（“，术语 ) 在生物科学领域，我们也承认，将种族作为一个政治或社会范畴来研究种族主义，尽管充满了许多挑战，但鉴于我们需要了解结构性不平等和歧视是如何导致健康差异的，仍然是必要的，差异 ) 尤德尔说，在小组之间。
2016年12月阅读原文
四级Then, he's going to need to know the technical details of your system and acquire the specific equipment necessary for jamming your specific setup.
然后，他需要知道你系统的技术细节，并获得干扰你特定设置所需的特定设备。
2016年12月阅读原文
考研They argue that government action is necessary to curb Britain's addiction to unhealthy food and help halt spiraling rates of obesity, diabetes and heart disease.
他们认为，政府的行动是必要的，以遏制英国对不健康食品的上瘾，并帮助阻止肥胖、糖尿病和心脏病不断上升的发病率。
2011年考研真题（英语二）阅读理解 Section Ⅱ
四级In addition, it is necessary to apply for graduation when you're near the time that you will be completing your graduation requirements.
此外，当你即将完成毕业要求时，有必要申请毕业。
2016年6月四级真题（第二套）听力 Section C
六级If the economy starts to shrink again, Baily says, it would make a strong case for a second stimulus—something the Obama administration hopes will not be necessary.
贝利说，如果经济再次开始萎缩，将有力地支持第二次刺激计划，而奥巴马政府希望这是不必要的。
2016年6月六级真题（第二套）听力 Section C
考研This increasingly high level of education is probably a necessary, but not a sufficient, condition for the complex political systems required by advanced economic performance.
这种日益提高的教育水平可能是先进经济表现所要求的复杂政治制度的必要条件，但不是充分条件。
2009年考研阅读原文
六级a basis for explaining human genetic diversityan aid to understanding different populationsan explanation for social and cultural differencesa term to describe individual human characteristicsmodern genetics research is likely to fuel racial conflictsrace is a poorly defined marker of human genetic diversityrace as a biological term can explain human genetic diversitygenetics research should consider social and cultural variablesit is absolutely necessary to put race aside in making diagnosisit is important to include social variables in genetics researchracial categories for genetic diversity could lead to wrong clinical predictionsdiscrimination against black people may cause negligence in clinical treatmentThey be more precise with the language they use.
解释人类遗传多样性的基础有助于理解不同的人群解释社会和文化差异描述人类个体特征的术语现代遗传学研究可能助长种族冲突种族是人类遗传多样性的一个定义不清的标记种族作为一个生物学术语可以解释人类遗传多样性遗传学研究应考虑到社会和文化的差异，在诊断中必须将种族放在一边，在遗传学中包含社会变量是很重要的。研究遗传类别的遗传多样性可能导致错误的临床预测。临床治疗中的疏忽他们使用的语言更加精确。
2016年12月阅读原文
六级Online security cameras, intelligent lighting and a wealth of sensors that control both temperature and air quality are offering an unprecedented level of control, efficiency, and improvements to what were once classed necessary costs when running a busin
在线安全摄像头、智能照明和大量控制温度和空气质量的传感器提供了前所未有的控制水平、效率，并改善了曾经被列为经营企业所需的成本
2017年12月六级真题（第二套）阅读 Section C
考研Progress in both area is undoubtedly necessary for the social, political and intellectual development of these and all other societies; however, the conventional view that education should be one of the very highest priorities for promoting rapid economic development in poor countries is wrong.
毫无疑问，这两个领域的进展对于这些社会和所有其他社会的社会、政治和智力发展是必要的；然而，传统观点认为教育应该是促进穷国经济快速发展的最优先事项之一，这是错误的。
2009年考研阅读原文
考研Further arrangements- and there may be many-between the NHS and DeepMind will be carefully scrutinised to ensure that all necessary permissions have been asked of patients and all unnecessary data has been cleaned.
进一步的安排——NHS和DeepMind之间可能会有很多安排——将被仔细审查，以确保向患者申请了所有必要的许可，并清理了所有不必要的数据。
2018年考研阅读原文
六级With fertilizer prices jumping nearly 50% per metric ton over the last year in some places, human waste is an attractive, and often necessary, alternative.
在一些地方，化肥价格比去年每公吨上涨了近50%，人类粪便是一种有吸引力的、而且经常是必要的替代品。
2016年6月阅读原文
四级Although Kodak anticipated the inevitable rise of digital photography, its corporate（企业的） culture was too rooted in the successes of the past for it to make the clean break necessary to fully embrace the future
尽管柯达预见到数码摄影不可避免的崛起，但其公司(企业的） 文化过于植根于过去的成功，以至于它无法完全拥抱未来
2013年6月阅读原文
考研If it clears the House, this measure would still have to get through the Senate where someone is bound to point out that it amounts to the bare, bare minimum necessary to keep the Postal Service afloat, not comprehensive reform.
如果这项措施在众议院获得通过，那么它仍必须在参议院获得通过，在参议院一定会有人指出，这是维持邮政服务正常运行所必需的最低限度，而不是全面改革。
2018年考研阅读原文
六级In particular, Arum and Roksa found, college students were not developing the critical thinking, analytic reasoning and other higher-level skills that are necessary to thrive in today's knowledge-based economy and to lead our nation in a time of complex challenges and dynamic change.
特别是，Arum和Roksa发现，大学生没有发展出批判性思维、分析推理和其他更高层次的技能，而这些技能是在当今以知识为基础的经济中茁壮成长、在复杂挑战和动态变化的时代领导我们的国家所必需的。
2015年12月阅读原文
六级In particular, Arum and Roksa found, college students were not developing the critical thinking, analytic reasoning and other higher-level skills that are necessary to thrive in today's knowledge-based economy and to lead our nation in a time of complex c
特别是，Arum和Roksa发现，大学生没有发展出批判性思维、分析推理和其他更高层次的技能，而这些技能是在当今以知识为基础的经济中蓬勃发展所必需的，也是在复杂的经济时代领导我们的国家所必需的
2015年12月六级真题（第一套）阅读 Section C
六级They believe such a diet which includes no products from animal sources can be deficient in many of the necessary vitamins and minerals our bodies need.
他们认为，这种不含动物源产品的饮食可能缺乏我们身体所需的许多必要维生素和矿物质。
2013年6月听力原文
四级Such a system could, if necessary, move troops quickly from one area to another.
如有必要，这种系统可以将部队从一个地区快速转移到另一个地区。
2018年6月四级真题（第二套）听力 Section C
考研"Idleness is not just a vacation, an indulgence or a vice; It is as indispensable to be brain as vitamin D is to the body...[idleness] is, paradoxically, necessary to getting any work done," he argues.
“懒惰不仅仅是一种休假、放纵或恶习；就像维生素D对身体一样，大脑也是不可或缺的……自相矛盾的是，无所事事是完成任何工作的必要条件，”他认为。
2018年考研真题（英语二）阅读理解 Section Ⅱ
考研To be sure, he performs an impressive variety of interesting compositions, but it is not necessary for me to visit Avery Fisher Hall, or anywhere else, to hear interesting orchestral music.
可以肯定的是，他表演了令人印象深刻的各种有趣的作品，但我没有必要去埃弗里·费舍尔音乐厅或其他任何地方听有趣的管弦音乐。
2011年考研阅读原文
考研That is a necessary and practical approach.
这是一种必要和实际的做法。
2017年考研翻译原文
四级Russell argues that as robots take on more complicated tasks, it's necessary to translate our morals into AI language.
罗素认为，随着机器人承担更复杂的任务，有必要将我们的道德观转化为人工智能语言。
2016年6月阅读原文
高考Nutrition is necessary for life, so it is not surprising that food is such an important part of different cultures around the world.
营养是生命所必需的，因此食物是世界各地不同文化的重要组成部分也就不足为奇了。
2015年高考英语安徽卷 阅读理解 阅读E 原文
考研Humanity has the necessary agro-technological tools to eradicate hunger, from genetically engineered crops to artificial fertilizers.
人类拥有必要的农业技术工具来消除饥饿，从基因工程作物到人工肥料。
2013年考研阅读原文
高考One group was asked to seek out an interaction with its waiter; the other, to speak only when necessary.
其中一组被要求与服务员进行互动；另一种是，只有在必要时才发言。
2018年高考英语全国卷2 阅读理解 阅读D 原文
四级It is possible for burglars to make jamming attacks with the necessary equipment and skill.
窃贼有可能用必要的设备和技能进行干扰攻击。
2016年12月阅读原文
高考Students should have a proper attitude towards college before thinking about which college to attend, and it's never too early to make necessary preparations for a healthy and meaningful college experience.
学生们在考虑上哪所大学之前，应该对大学有一个正确的态度，为健康而有意义的大学经历做必要的准备永远都不为时尚早。
2019年高考英语北京卷 语法填空 原文
高考When it comes to emotional support, the author thinks it necessary to surround yourself with supportive people.
当谈到情感支持时，作者认为有必要让自己周围都是支持自己的人。
2015年高考英语福建卷 阅读理解 阅读E 题设
考研If it clears the House, this measure would still have to get through the Senate-where someone is bound to point out that it amounts to the bare, bare minimum necessary to keep the Postal Service afloat, not comprehensive reform.
如果这项措施在众议院获得通过，那么它仍必须在参议院获得通过，在参议院一定会有人指出，这是维持邮政服务正常运行所必需的最低限度，而不是全面改革。
2018年考研真题（英语一）阅读理解 Section Ⅱ
四级To Fendley, a sense of drive and purpose, as well as an effective high-school education, and basic life skills, like balancing a checkbook, are the necessary ingredients for a successful life in America.
对芬德利来说，一种干劲和目标感，有效的高中教育，以及基本的生活技能，比如平衡支票簿，是美国成功生活的必要因素。
2017年12月四级真题（第三套）阅读 Section C
高考A school boy or girl is unpunctual because he or she does not have the necessary human virtue of self-discipline.
一个在校的男孩或女孩是不守时的，因为他或她没有必要的人类自律美德。
2015年高考英语陕西卷 阅读理解 阅读B 原文
考研That's because happiness is linked to the kind of longer-term thinking necessary for making investments for the future.
这是因为幸福感与为未来投资所需的长期思维联系在一起。
2016年考研真题（英语二）完形填空 Section Ⅰ
四级But with that policy now being abolished, this holiday incentive is no longer necessary, the government says.
但政府表示，随着这项政策现在被废除，这种假日激励不再必要。
2019年6月四级真题（第一套）听力 Section A
高考Believing in such a world, many governments have put an end to some of the very necessary regulations on cross-border flows of capital, labour and goods, with poor results.
由于相信这样一个世界，许多政府已经终止了一些关于资本、劳动力和货物跨境流动的非常必要的规定，但收效甚微。
2019年高考英语江苏卷 阅读理解 阅读C 原文
六级Furthermore, they say, it is the best way for researchers to gather the range of observations that are necessary to speed up discoveries or to identify large-scale trends.
此外，他们说，这是研究人员收集加速发现或确定大规模趋势所必需的观测范围的最佳方式。
2017年12月六级真题（第二套）阅读 Section B
四级It is necessary for the companies and state agencies involved to consider the ethical consequences of these potential changes to build a better future for all.
公司和国家机构必须考虑这些潜在变化的伦理后果，为所有人创造更好的未来。
2018年12月四级真题（第三套）阅读 Section C
考研Further arrangements—and there may be many—between the NHS and Deep mind will be carefully scrutinized to ensure that all necessary permissions have been asked of patients and all unnecessary data has been cleaned.
NHS和Deep mind之间的进一步安排和可能存在的许多问题将被仔细审查，以确保向患者申请了所有必要的许可，并清理了所有不必要的数据。
2018年考研真题（英语一）阅读理解 Section Ⅱ
考研Progress in both areas is undoubtedly necessary for the social, political and intellectual development of these and all other societies; however, the conventional view that education should be one of the very highest priorities for promoting rapid economi
毫无疑问，这两个领域的进展对于这些社会和所有其他社会的社会、政治和智力发展是必要的；然而，传统观点认为，教育应该是促进经济快速发展的最优先事项之一
2009年考研真题（英语一）阅读理解 Section Ⅱ
四级Although Kodak anticipated the inevitable rise of digital photography, its corporate（企业的） culture was too rooted in the successes of the past for it to make the clean break necessary to fully embrace the future.
尽管柯达预见到数码摄影不可避免的崛起，但其公司(企业的） 文化过于植根于过去的成功，以至于它无法完全拥抱未来。
2013年6月阅读原文
四级Is breakfast a necessary start to the day or a marketing tactic by cereal companies?
早餐是一天的必要开始还是谷物公司的营销策略？
2019年12月四级真题（第三套）阅读 Section B
六级Therefore, team building may be necessary in order to improve the group’s performance.
因此，为了提高团队绩效，团队建设可能是必要的。
2015年12月听力原文
六级Therefore, team building may be necessary in order to improve the group's performance.
因此，为了提高团队绩效，团队建设可能是必要的。
2015年12月六级真题（第二套）听力 Section B
六级A person shouldn't buy an insurance protection that really isn't necessary.
一个人不应该买一个真正不必要的保险。
2017年12月六级真题（第二套）听力 Section C
四级While such vigilant（警觉的）tracking of cancer is a good thing in general, researchers are increasingly questioning whether all of this testing is necessary for the elderly
尽管如此警惕(警觉的）一般来说，追踪癌症是一件好事，研究人员越来越质疑所有这些检测是否对老年人都是必要的
2012年12月阅读原文
考研This might sound small, but to undo the effects of such a decrease a candidate would need 30 more GMAT points than would otherwise have been necessary.
这听起来可能很小，但要消除这种下降的影响，一名考生需要比其他情况多30个GMAT分数。
2013年考研真题（英语一）完形填空 Section Ⅰ
四级Mr Obama's plan to curb carbon dioxide (CO2) emissions (排放), though necessary, will be far from cost-free, whatever his sunny speeches on the subject might suggest.
奥巴马控制二氧化碳（CO2）排放的计划(排放), 尽管这是必要的，但无论他在这一主题上的阳光演讲可能会提出什么建议，它都远不是免费的。
2013年6月阅读原文
考研first, it is very expensive to set up the computer, card reader, and telecommunications networks necessary to make electronic money the dominant form of payment.
首先，建立使电子货币成为主要支付形式所必需的计算机、读卡器和电信网络的成本非常高。
2013年考研真题（英语二）完形填空 Section Ⅰ
六级Our study will use a large corporate dataset from a major medical company to examine how technology extends our working hours and thus interferes with necessary cognitive recovery, resulting in huge health care costs and turnover costs for employers.
我们的研究将使用一家大型医疗公司的大型企业数据集，研究技术如何延长我们的工作时间，从而干扰必要的认知恢复，从而为雇主带来巨大的医疗成本和离职成本。
2018年12月六级真题（第一套）阅读 Section B
考研On the one hand, it's a necessary condition for many worthwhile things: child care, friendships, etc.
一方面，这是许多有价值的事情的必要条件：儿童保育、友谊等等。
2018年考研真题（英语一）完形填空 Section Ⅰ
高考Unfortunately, you must carry the necessary equipment with you, since it's all but impossible to find natural substitutes.
不幸的是，你必须随身携带必要的设备，因为要找到天然的替代品几乎是不可能的。
2017年高考英语全国卷1 阅读理解 阅读D 原文
六级And we create opportunity for assessment and intervention, to help clients and communities cope effectively with the reality and change that reality when necessary.
我们创造评估和干预的机会，帮助客户和社区有效应对现实，并在必要时改变现实。
2016年12月听力原文
六级To find effective solutions to climate change, it is necessary to understand what motivates people to make change.
为了找到有效的气候变化解决方案，有必要了解是什么促使人们做出改变。
2015年12月阅读原文
六级Whether the security checks were really necessary.
安全检查是否真的有必要。
2012年12月听力原文
四级Now a third and far more significant motivation presents itself: meeting these goals may be necessary to prevent the collapse of our civilization.
现在，第三个也是更重要的动机出现了：实现这些目标可能是防止我们文明崩溃的必要条件。
2016年6月阅读原文
六级A code number is necessary to run the copy machine.
运行复印机需要一个代码。
2013年6月听力原文
高考So, comfortable shoes are really necessary.
所以，舒适的鞋子是非常必要的。
2016年高考英语全国卷2 听力 原文
高考It is necessary for us to think of others and be considerate to them.
我们有必要为他人着想，为他人着想。
2015年高考英语陕西卷 阅读理解 阅读B 原文
考研For him, order does not result from forgetting or ignoring the disorders that plague our existence; order is a necessary development, an improvement that may lead to the Greek ideal of spiritual elevation.
对他来说，秩序不是因为忘记或忽视困扰我们生存的混乱；秩序是一种必要的发展，一种可能导致希腊精神提升理想的进步。
2014年考研翻译原文
考研At the very least, it has awoken us from our national fever dream of easy riches and bigger houses, and put a necessary end to an era of reckless personal spending.
至少，它让我们从轻松致富、拥有更大房子的民族狂热梦想中清醒过来，并必要地结束了一个不计后果的个人消费时代。
2012年考研真题（英语二）阅读理解 Section Ⅱ
六级It will also be necessary to understand what sort of yield farmers might expect and to establish the plant's safety.
还有必要了解农民可能期望的产量，并确定工厂的安全性。
2018年6月六级真题（第一套）阅读 Section B
考研But are such government mandates even necessary?
但这样的政府授权有必要吗？
2020年考研真题（英语一）阅读理解 Section Ⅱ
高考Loans to small local farmers are necessary.
向当地小农户提供贷款是必要的。
2018年高考英语江苏卷 阅读理解 阅读C 选项
六级“While we argue phasing out racial terminology (术语)in the biological sciences, we also acknowledge that using race as a political or social category to study racism, although filled with lots of challenges, remains necessary given our need to understand how structural inequities and discrimination produce health disparities (差异) between groups.
“当我们主张逐步淘汰种族术语时(术语)在生物科学中，我们也承认，将种族作为一个政治或社会类别来研究种族主义，尽管充满了许多挑战，但仍然是必要的，因为我们需要了解结构性的不平等和歧视是如何产生健康差异的(差异) 组之间。
2016年12月六级（第三套）真题
六级a basis for explaining human genetic diversity
an aid to understanding different populations
an explanation for social and cultural differences
a term to describe individual human characteristics
The example of the disease cystic fibrosis underdiagnosed in people of African ancestry demonstrates that
it is absolutely necessary to put race aside in making diagnosis
it is important to include social variables in genetics research.
解释人类遗传多样性的基础
2016年12月六级（第三套）真题
六级Meanwhile, government spending that would make everyone better off was being cut down because people instinctively—and wrongly—labeled government only as “a necessary evil.
与此同时，让每个人都过得更好的政府支出正在被削减，因为人们本能地——错误地——只把政府贴上了“必要的邪恶”的标签。
2007年6月英语六级真题
六级Obviously, it is necessary that effective actions should be taken to prevent problems.
显然，必须采取有效行动防止出现问题。
2008年12月英语六级真题
四级” “By the year 2000 knowledge of computers will be necessary in over eighty percent of all occupations.
”“到2000年，80%以上的职业都需要掌握计算机知识。
1991年1月英语四级真题
四级And yet the average bank for many year was, to the average citizen, a fearful, if necessary, instrument for dealing with business—usually big business.
然而，多年来，对于普通公民来说，普通银行是一种可怕的（如果必要的话）处理商业的工具——通常是大企业。
1992年1月大学英语四级(CET-4)真题
四级The rule wouldn’t have been necessary but for one simple fact.
如果不是因为一个简单的事实，这个规则是不必要的。
1992年1月大学英语四级(CET-4)真题
四级Then she writes a care plan centered on the patient’s illness but which also includes everything else that is necessary.
然后，她写了一份以患者病情为中心的护理计划，其中还包括其他一切必要的内容。
1993年6月大学英语四级(CET-4)真题
四级And yet the average bank for many years was, to the average citizen, a fearful, if necessary, instrument for dealing with business—usually big business.
然而，多年来，对于普通公民来说，普通银行是一种可怕的（如果必要的话）处理商业——通常是大企业的工具。
1994年6月大学英语四级(CET-4)真题
四级Therefore, with every increase of knowledge and skill, wisdom becomes more necessary, for every such increase augments (增强) our capacity for realizing our purposes, and therefore augments our capacity for evil, if our purpose are unwise.
因此，随着知识和技能的每一次增长，智慧就变得更加必要，因为每一次这样的增长都会增强(增强) 如果我们的目的是不明智的，我们实现目标的能力，从而增强我们邪恶的能力。
1995年1月大学英语四级(CET-4)真题
四级This allowed us to make adjustments as necessary.
这使我们能够根据需要进行调整。
1995年6月大学英语四级(CET-4)真题
四级Later Parliament increased the speed limit to 14 m. p. h. But by 1903 the development of the car industry had made it necessary to raise the limit to 20 m. p. h. By 1930, however, the law was so widely ignored that speeding restrictions were done away with altogether.
后来，议会将车速限制提高到了每小时14英里。但到1903年，随着汽车工业的发展，有必要将车速限制增加到每小时20英里。然而，到1930年，这项法律被广泛忽视，以至于超速限制被完全取消。
1997年1月大学英语四级(CET-4)真题
四级However, they may lack the money to allow them to import the necessary materials.
然而，他们可能缺乏资金来进口必要的材料。
1999年1月大学英语四级(CET-4)真题
四级Effective communication is necessary to instruct your dog about what you want it to do.
有效的沟通对于指导你的狗你想让它做什么是必要的。
2001年1月大学英语四级(CET-4)真题
四级It is not necessary to establish yourself as top dog or leader of the pack (群) by using extreme measure.
没有必要把自己确立为顶尖人物或领导者(群) 通过使用极端措施。
2001年1月大学英语四级(CET-4)真题
四级This is necessary because the body of the fish is covered with a thin, protective film which will stick to your dry hands.
这是必要的，因为鱼的身体覆盖着一层薄薄的保护膜，它会粘在你干燥的手上。
2005年6月大学英语四级(CET-4)真题
四级The decline in government support has made funding-raising an increasing necessary ability among administrators and has hiring committees hungry for Americans.
政府支持的减少使得筹集资金在行政人员中提高了必要的能力，并使招聘委员会渴望美国人。
2009年12月大学英语四级考试真题
四级To make “green campus” come true, firstly, it is necessary to work out effective principles for the development of sustainable and recyclable campus.
要实现“绿色校园”，首先要制定可持续发展、可循环利用校园的有效原则。
2009年12月大学英语四级考试真题
四级Last but not least, it is necessary to strengthen the ties between campus and society, so as to ensure that “green campus” can work smoothly with the co-effort of the whole society.
最后，要加强校园与社会的联系，确保“绿色校园”在全社会的共同努力下顺利运行。
2009年12月大学英语四级考试真题
四级And if we keep working toward that goal, someday, perhaps a list won’t be necessary.
如果我们继续朝着这个目标努力，也许有一天，清单就没有必要了。
2012年6月英语四级考试真题
四级As for me, I definitely support the view that education is necessary for people’s life.
就我而言，我绝对支持教育对人们的生活是必要的这一观点。
2012年12月大学英语四级真题试卷（1）
四级While such vigilant (警觉的) tracking of cancer is a good thing in general, researchers are increasingly questioning whether all of this testing is necessary for the elderly.
尽管如此警惕(警觉的) 追踪癌症总体来说是一件好事，研究人员越来越多地质疑所有这些检测是否对老年人来说都是必要的。
2012年12月大学英语四级真题（2）
四级Mr Obama’s plan to curb carbon dioxide (CO₂) emissions (排放), though necessary, will be far from cost-free, whatever his sunny speeches on the subject might suggest.
奥巴马遏制二氧化碳排放的计划₂) 排放(排放), 尽管这是必要的，但无论他关于这个主题的阳光演讲可能暗示什么，这都远非免费的。
2013年6月大学英语四级考试真题(第1套)
四级Although Kodak anticipated the inevitable rise of digital photography, its corporate (企业的) culture was too rooted in the successes of the past for it to make the clean break necessary to fully embrace the future.
尽管柯达预见到数码摄影的必然崛起，但其公司(企业的) 文化过于植根于过去的成功，以至于它无法彻底突破，完全拥抱未来。
2013年6月大学英语四级考试真题(第2套)
四级This is necessary because full-time students probably have to read several hundred pages every week.
这是必要的，因为全日制学生可能每周都要读几百页。
2014年6月大学英语四级考试真题(第1套)
四级This is simply not a large enough group to reduce the social stigma(污名)and force other adjustments necessary to supporting men in this decision, even if only for a relatively short time.
这根本不是一个足够大的群体来减少社会污名(污名)并强制进行其他必要的调整，以支持男性做出这一决定，即使只是在相对较短的时间内。
2015年6月大学英语四级考试真题（第2套)
四级Although Kodak anticipated the inevitable rise of digital photography, its corporate(企业的）culture was too rooted in the successes of the past for it to make the clean break necessary to fully embrace the future.
尽管柯达预见到数码摄影的必然崛起，但其公司(企业的）文化过于植根于过去的成功，以至于它无法彻底突破，完全拥抱未来。
2015年6月大学英语四级考试真题（第3套)
四级Adults tend to talk about learning as if it were medicine; unpleasant, but necessary and good for you.
成年人往往把学习当作医学来谈论；令人不快，但对你来说是必要和有益的。
2015年12月英语四级考试真题（第1套）
四级Their babies retain the ability to produce their own chlorophyll, though they can’t generate energy from sunlight until they’ve eaten enough algae to steal the necessary genes, which they can’t yet produce on their own.
他们的婴儿保留了产生自己叶绿素的能力，尽管在吃了足够的藻类来窃取必要的基因之前，他们无法从阳光中产生能量，而这些基因还不能自己产生。
2019年12月大学英语四级真题（第2套）
四级However, Luntz’s recommendation wasn’t necessary.
然而，伦茨的建议并不必要。
2020年12月大学英语四级真题（第3套）
考研Managers will want to have all the necessary facts before they can make the best decision and it is normal for them to seek for more and more information.
经理们希望在做出最佳决策之前掌握所有必要的事实，他们寻求越来越多的信息是正常的。
1985年全国硕士研究生入学统一考试英语试题
考研That may be so, but it is certainly no longer necessary for a woman to spend her whole life cooking, cleaning, mending and sewing.
也许是这样，但对于一个女人来说，再也没有必要花一辈子的时间做饭、打扫卫生、缝补和缝纫了。
1988年全国硕士研究生入学统一考试英语试题
考研A wise man once said that the only thing necessary for the triumph of evil is for good men to do nothing.
一位智者曾经说过，邪恶胜利的唯一必要条件就是好人什么都不做。
1991年全国硕士研究生入学统一考试英语试题
未经许可，严禁转发。QQ交流群：688169419