考托詞匯積累你了解十面“霾”伏么
1考托詞匯積累你了解十面“霾”伏么
近年來,，空氣污染問題日益嚴(yán)重,，尤其是PM2.5這一概念頻繁出現(xiàn)在媒體報道中。對于備考托福的學(xué)生來說,，了解與空氣質(zhì)量相關(guān)的專業(yè)詞匯和背景知識,，將對閱讀理解大有裨益。
According to recent reports, long-term exposure to particulate matter, particularly those smaller than 2.5 micrometers (PM2.5), poses significant health risks. These fine particles can penetrate deep into the lungs, reaching the alveoli and potentially leading to severe respiratory issues.
PM2.5 refers to atmospheric particles with a diameter of 2.5 micrometers or less, also known as "respirable particulate matter." It is crucial to note that PM stands for particulate matter, which includes various sources such as vehicle emissions, industrial discharges, and even cooking fumes. The size of PM2.5 particles is less than one-twentieth the width of a human hair, making them particularly hazardous due to their ability to remain airborne for extended periods and travel long distances.
These fine particles contain numerous toxic substances, which can significantly impact both human health and environmental quality. As a result, the trend of employing PM2.5 measurement for air quality monitoring is gaining traction worldwide.
Recently, the term PM2.5 has become widely recognized, indicating the need for stricter air quality standards to uncover more environmental dangers and enhance public awareness.
China's environmental authorities are set to introduce new air quality standards that will now include monitoring of PM2.5, the smallest and most harmful particles in the atmosphere. Public consultations are taking place in many cities regarding these standards, which aim to assess the true cleanliness of the air.
Smog has become a common sight in major Chinese cities like Beijing, Shanghai, and Hangzhou. Recently, dense pollution has frequently enveloped these urban areas, reducing visibility to below one kilometer and causing significant disruptions such as traffic jams and flight delays.
This situation has heightened public concern about air quality. Environmental activist Ma Jun, who has been researching these issues since the mid-1990s, founded an NGO in Beijing in 2006 to address these pressing matters.
The newly published air quality standards by the Ministry of Environmental Protection now include monitoring of PM2.5, as these particles can cause severe health problems by penetrating lung tissue. The revised standards are currently open for public feedback and are expected to be implemented from 2016.
In response to these standards, cities like Shanghai and Nanjing have announced pilot programs to begin monitoring and publishing PM2.5 levels soon. Experts believe that initial monitoring results may not meet international standards.
Stricter air standards will help reveal more environmental hazards and raise public consciousness, ultimately assisting the government in its goal of providing cleaner, healthier air for all citizens.
通過對與PM2.5相關(guān)詞匯的學(xué)習(xí),，托?？忌梢愿玫乩斫猸h(huán)境科學(xué)領(lǐng)域的重要話題。希望大家在備考過程中,，能夠掌握這些關(guān)鍵知識,，提高自己的語言能力和閱讀理解水平。
2考托福詞匯備考技巧
對于許多托?？忌鷣碚f,，詞匯量的大小直接影響到考試的成績。詞匯不僅在閱讀和聽力中起著至關(guān)重要的作用,，也會影響到口語和寫作部分的表現(xiàn),。以下是一些有效的備考技巧，幫助你提升托福詞匯量,。
1. 制定詞匯學(xué)習(xí)計劃 ??
首先,，你需要制定一個合理的學(xué)習(xí)計劃。每天花費(fèi)一定的時間專注于詞匯的學(xué)習(xí),，例如：
- 每天學(xué)習(xí)10-15個新單詞,。
- 每周復(fù)習(xí)之前學(xué)過的詞匯。
- 利用周末進(jìn)行集中復(fù)習(xí)和測試,。
2. 使用詞匯書和應(yīng)用程序 ??
選擇一本合適的詞匯書,，如《Barron's Essential Words for the TOEFL》。此外，使用手機(jī)應(yīng)用程序也是一個不錯的選擇,，例如：
- Quizlet：可以創(chuàng)建自己的詞匯卡片,，方便隨時復(fù)習(xí)。
- Anki：基于間隔重復(fù)的學(xué)習(xí)方法,，有效提高記憶效果,。
3. 通過上下文記憶單詞 ??
僅僅記住單詞的意思是不夠的，理解其在句子中的用法至關(guān)重要,。嘗試以下方法：
- 閱讀英文文章,，標(biāo)記不懂的單詞并查找其含義。
- 將新學(xué)的單詞用在自己的句子中,，幫助加深印象,。
- 收集例句，了解單詞的不同用法,。
4. 參加模擬考試 ??
通過模擬考試來檢驗(yàn)自己的詞匯水平,。可以使用以下資源：
- 托福官方網(wǎng)站提供的模擬題,。
- 第三方網(wǎng)站上的練習(xí)題,，如ETS或Kaplan。
5. 多聽多說多寫 ??
將所學(xué)的詞匯運(yùn)用到實(shí)際中去,。你可以：
- 收聽英語播客,，注意其中的生詞及其用法。
- 與朋友進(jìn)行英語對話,，嘗試使用新學(xué)的詞匯,。
- 寫日記或短文，盡量多用新詞匯,。
6. 反復(fù)復(fù)習(xí)與自測 ??
定期復(fù)習(xí)是鞏固詞匯的關(guān)鍵。你可以：
- 每周進(jìn)行一次自測,，檢查自己對詞匯的掌握情況,。
- 利用閃卡進(jìn)行快速復(fù)習(xí)，強(qiáng)化記憶,。
7. 保持積極的心態(tài) ??
學(xué)習(xí)詞匯可能會感到枯燥,，但保持積極的態(tài)度非常重要。嘗試找到學(xué)習(xí)的樂趣,，例如：
- 與其他考生組隊學(xué)習(xí),，互相激勵。
- 設(shè)定小目標(biāo),，并給予自己獎勵,。
通過以上這些技巧，你可以有效提升自己的托福詞匯量，從而在考試中取得更好的成績,。祝你備考順利,！
