染雾以字母A开头的重点四级英语单词 篇一
Air Pollution: Causes, Effects, and Solutions
Air pollution is a major environmental issue that affects people's health and the quality of the atmosphere. It refers to the contamination of the air by harmful substances such as pollutants and gases. In this article, we will discuss the causes, effects, and possible solutions to combat air pollution.
The primary cause of air pollution is the emission of pollutants from various sources, including industrial activities, transportation, and burning of fossil fuels. These pollutants include carbon monoxide, nitrogen dioxide, sulfur dioxide, and particulate matter. The release of these substances into the air leads to the formation of smog, which is a visible air pollutant.
The effects of air pollution on human health are significant. Breathing in polluted air can lead to respiratory problems such as asthma, bronchitis, and even lung cancer. It can also cause cardiovascular diseases, allergies, and premature death. Moreover, air pollution has adverse effects on the environment, including acid rain, global warming, and the destruction of ecosystems.
To combat air pollution, several solutions can be implemented. Firstly, the use of renewable energy sources such as solar and wind power can reduce the dependency on fossil fuels, thus decreasing pollution from power plants. Secondly, governments should enforce stricter regulations on industries to limit their emissions. Additionally, promoting public transportation and encouraging people to use bicycles or walk can reduce vehicle emissions.
Furthermore, individuals can contribute to reducing air pollution by adopting environmentally friendly habits. For example, conserving energy by turning off lights and appliances when not in use can reduce the demand for electricity, which in turn reduces pollution from power plants. Also, recycling and properly disposing of waste can prevent the release of harmful substances into the air.
In conclusion, air pollution is a major problem that affects both human health and the environment. It is caused by the emission of pollutants from various sources and has detrimental effects on respiratory health, cardiovascular health, and the environment. To combat air pollution, a combination of government regulations, the use of renewable energy sources, and individual efforts is necessary. By taking action to reduce air pollution, we can protect our health and the planet for future generations.
以字母A开头的重点四级英语单词 篇二
Advantages and Disadvantages of Artificial Intelligence
Artificial Intelligence (AI) refers to the ability of machines to simulate human intelligence and perform tasks that would typically require human intelligence. While AI has numerous advantages and potential applications, it also comes with certain disadvantages. In this article, we will explore the advantages and disadvantages of artificial intelligence.
One of the significant advantages of AI is its ability to perform tasks with accuracy and precision. Machines equipped with AI can analyze vast amounts of data and make decisions based on patterns and algorithms. This capability is particularly useful in fields such as medicine, where AI can assist in diagnosing diseases and recommending treatments.
Another advantage of AI is its ability to automate tasks, which can lead to increased productivity and efficiency. Machines can perform repetitive tasks without fatigue, allowing humans to focus on more complex and creative tasks. This automation can be seen in industries such as manufacturing, where robots are used to assemble products and perform quality control.
Furthermore, AI has the potential to improve safety and security. For example, AI can be used in autonomous vehicles to enhance road safety by detecting and reacting to potential hazards. AI can also be used in cybersecurity to detect and prevent cyber-attacks by analyzing patterns and identifying threats.
However, along with its advantages, AI also has certain disadvantages. One of the main concerns is the potential loss of jobs due to automation. As machines become more capable of performing tasks traditionally done by humans, there is a risk of unemployment for those whose jobs can be easily automated.
Another disadvantage of AI is the ethical implications it raises. For instance, AI algorithms may be biased or discriminatory, leading to unfair decisions or perpetuating existing social inequalities. It is crucial to ensure that AI systems are designed and programmed ethically to avoid these issues.
Additionally, there are concerns about the privacy and security of personal data in the era of AI. As AI relies on collecting and analyzing large amounts of data, there is a risk of data breaches and unauthorized access to sensitive information. Stricter regulations and safeguards need to be in place to protect individuals' privacy and data.
In conclusion, artificial intelligence has numerous advantages, including increased accuracy, automation, and improved safety. However, it also comes with disadvantages such as job displacement, ethical concerns, and privacy risks. It is essential to continue exploring the potential of AI while addressing these concerns to ensure that it is used responsibly and for the benefit of society.
以字母A开头的重点四级英语单词 篇三
以字母A开头的重点四级英语单词
导语：这是由应届毕业生小编为大家整理的以字母A开头的重点四级英语单词词汇。
abandon/ ə’bændən/ vt.丢弃;放弃，抛弃
aboard/ ə’bɔ:d/ ad.在船(车)上;上船
absolute/ ‘æbsəlu:t/ a.绝对的;纯粹的
absolutely/ ‘æbsəlu:tli/ ad.完全地;绝对地
absorb/ əb’sɔ:b/ vt.吸收;使专心
abstract/ ’æbstrækt/ n.摘要
abundant/ ə’bΛndənt/ a.丰富的;大量的
abuse/ ə’bju:z, ə’bju:s/ vt.滥用;虐待 n.滥用
academic/ ækə’demik/ a.学院的;学术的
accelerate/ æk’seləreit/ vt.(使)加快;促进
access/ ‘ækses/ n.接近;通道，入口
accidental/ æksi’dentl/ a.偶然的;非本质的
accommodate/ ə’kɔmədeit/ vt.容纳;供应，供给
accommodation/ ə,kɔmə’deiʃən/ n.招待设备;预定铺位
accompany/ ə’kΛmpəni/ vt.陪伴，陪同;伴随
accomplish/ ə’kɔmpliʃ/ vt.达到(目的.);完成
accordance/ ə’kɔr:dəns/ n.一致;和谐;授予
accordingly/ ə’kɔr:diŋli/ ad.因此，所以;照着
account/ ə’kaunt/ n.记述;解释;帐目
accumulate/ ə’kju:mjuleit/ vt.积累 vi.堆积
accuracy/ ‘ækjurəsi/ n.准确(性);准确度
accurate/ ‘ækjurit/ a.准确的，正确无误的
accustomed/ ə’kΛstəmd/ a.惯常的;习惯的
acid/ ‘æsid/ n.酸;酸的，酸性的
acquaintance/ ə’kweintəns/ n.认识;了解;熟人
acquire / ə’kwaiə/ vt.取得;获得;学到
acre/ ‘eikə/ n.英亩(=6.07亩)
adapt/ ə’dæpt/ vt.使适应;改编
addition/ ə’diʃən/ n.加，加法;附加物
additional/ ə’diʃənl/ a.附加的，追加的
address / ə’dres/ n.地址;演说;谈吐
adequate/ ‘ædikwit/ a.足够的;可以胜任的
adjust/ ə’dʒΛst/ vt.调整，调节;校正
administration / ədminis’treiʃən/ n.管理;管理部门
admission/ əd’miʃən/ n.允许进入;承认
admit/ əd’mit/ vt.承认;准许…进入
advance/ əd’va:ns/ vi.前进;提高 n.进展
advanced/ əd’va:nst/ a.先进的;高级的
adventure/ əd’ventʃə/ n.冒险;惊险活动
advisable/ əd’vaizəbl/ n.明智的;可取的
affair/ ə’feə/ n.事情，事件;事务
affect/ ə’fekt/ vt.影响;感动
affection/ ə’fekʃən/ n.慈爱，爱;爱慕
afford/ ə’fɔr:d/ vt.担负得起…;提供
afterward/ ‘a:ftəwəd(z)/ ad.后来，以后
age/ eidʒ/ vt.变老
aggressive/ ə’gresiv/ a.侵略的;好斗的
aircraft/ ‘eəkra:ft/ n.飞机，飞行器
alarm/ ə’la:m/ n.惊恐，忧虑;警报
alcohol/ ‘ælkəhɔl/ n.酒精，乙醇
alike/ ə’laik/ a.同样的，相同的
alloy/ ‘ælɔi, ə’lɔi/ n.合金;(金属的)成色
alphabet/ ‘ælfəbit/ n.字母表，
alter/ ‘ɔ:ltə/ vt.改变，变更;改做
alternative/ ɔ:l’tə:nətiv/ n.替换物;取舍，抉择
altitude/ ‘æltitju:d/ n.高，高度;高处
aluminium/ ælju’minjəm/ n.铝
amaze/ ə’meiz/ vt.使惊奇，使惊愕
ambulance/ ‘æmbjuləns/ n.救护车;野战医院
amongst/ ə’mΛŋst/ prep在…之中(=among) amuse/ ə’mju:z/ vt.逗…乐;给…娱乐
analyse/ ‘ænəlaiz/ vt.分析，分解，解析
analysis/ ə’næləsis/ n.分析，分解，解析
ancestor/ ‘ænsistə/ n.祖宗，祖先
anchor/ ‘æŋkə/ n.锚 vi.抛锚，停泊
ancient/ ‘einʃənt/ a.古代的，古老的
ankle/ ‘æŋkl/ n.踝，踝节部
announce/ ə’nauns/ vt.宣布，宣告，发表
annoy/ ə’nɔi/ vt.使恼怒;打搅
annual/ ‘ænjuəl/ a.每年的 n.年报
anticipate/ æn’tisipeit/ vt.预料，预期，期望
anxiety/ æŋg’zaiəti/ n.焦虑，忧虑;渴望
anxious/ ‘æŋkʃəs/ a.忧虑的;渴望的
apart/ ə’pa:t/ ad.相隔;分开;除去
apologize/ ə’pɔlədʒaiz/ vi.道歉，谢罪，认错
apparatus/ ,æpə’reitəs/ n.器械，仪器;器官
appeal/ ə’pi:l/ vi.&n.呼吁;申述
appetite/ ‘æpitait/ n.食欲，胃口;欲望
appliance/ ə’plaiəns/ n.用具，器具，器械
applicable/ ‘æplikəbl/ a.能应用的;适当的
application/ æpli’keiʃən/ n.请求，申请;施用
appɔint/ ə’pɔint/ vt.任命，委任;约定
appreciate/ ə’pri:ʃieit/ vt.欣赏;领会;感谢
approval/ ə’pru:vəl/ n.赞成，同意;批准
approve/ ə’pru:v/ vt.赞成，称许;批准
approximate/ ə’prɔksimit/ a.近似的 vt.近似
arbitrary/ ‘a:bitrəri/ a.随心所欲的;专断的
architecture/ ‘a:kitektʃə/ n.建筑学;建筑式样
argue/ ‘a:gju:/ vi.争论，争辩，辩论
argument/ ‘a:gju:mənt/ n.争论，辩论;理由
arise/ ə’raiz/ vi.出现;由…引起
arithmetic/ ə’riθmətik/ n.算术，四则运算
arouse/ ə’rauz/ vt.引起，唤起;唤醒
article/ ‘a:tikl/ n.条款;物品
artificial/ a:ti’fiʃəl/ a.人工的;娇揉造作的
artistic/ a:’tistik/ a.艺术的;艺术家的
ash/ æʃ/ n.灰，灰末;骨灰
ashamed/ ə’ʃeimd/ a.惭愧(的);羞耻(的)
aspect/ ‘æspekt/ n.方面;样子，外表
assemble/ ə’sembl/ vt.集合，召集;装配
assembly/ ə’sembli/ n.集合;集会;装配
assess/ ə’ses/ vt.对(财产等)估价
assign/ ə’sain/ vt.指派;分配;指定
assist/ ə’sist/ vt.援助，帮助;搀扶
assistance/ ə’sistəns/ n. 协助,援助
associate/ ə’səuʃieit/ vi.交往 n.伙伴，同事
association/ əsəusi’eiʃən/ n.协会，团体;联合
assume/ ə’sju:m/ vt.假定;承担;呈现
assure/ ə’ʃuə/ vt.使确信;向…保证
astonish/ əs’tɔniʃ/ vt.使惊讶，使吃惊
astronaut/ ‘æstʃəunɔ:t/ n.宇宙航行员，宇航员
ætlantic/ ət’læntik/ a.大西洋的 n.大西洋
atom/ ‘ætəm/ n.原子;微粒;微量
atomic/ ə’tɔmik/ a.原子的;原子能的
attach/ ə’tætʃ/ vt.缚，系，贴;附加
attain/’tein/ vt.达到，获得，完成
attempt/ ə’tempt/ vt.尝试，试图 n.企图
attend/ ə’tend/ vt.出席;照顾，护理
attribute/ ‘ætribju:t/ vt.把…归因于 n.属性
audience/ ‘ɔ:djəns/ n.听众，观众，读者
authority/ ɔ:’θɔriti/ n.当局，官方;权力
automatic/ ɔ:tə’mætik/ a.自动的;机械的
automobile/ ‘ɔ:təməbi:l/ n.汽车，机动车
auxiliary/ ɔ:g’ziljəri/ a.辅助的;附属的
available/ ə’veiləbl/ a.可利用的;通用的
avenue/ ‘ævinju:/ n.林荫道，道路;大街
await/ ə’weit/ vt.等候，期待
awake/ ə’weik/ a.醒着的 vt.唤醒
award/ ə’wɔ:d/ n.奖，奖品;判定 a
ware/ ə’weə/ a.知道的，意识到的
awful/ ‘ɔ:ful/ a.令人不愉快的
awkward/ ‘ɔ:kwəd/ a.笨拙的;尴尬的
ax/ æks/ n.斧子
