英語4級聽力airpollution

㈠ 英語4級聽力的難度如何比高考的聽力要難多少

復難度比高考的難很多，語制速快很多，而且題目不給題干，得自己聽。除了聽寫句子和單詞，其他內容包括：短對話
、長對話、和短文章，都是只讀一遍的。
四級聽力題型及分值：1小對話：
8%
選擇題共8道對話，每題長約1分鍾
2長對話：
7%
選擇題共2段對話，每段長約3分鍾
3聽力短文：
10%
選擇題共3篇文章，每篇長約3分鍾
4復合式聽寫：10%
聽寫填空填8個單詞和三句話，放音三遍，共計8分鍾
聽力位於考試的卷二部分，共佔全卷35%。

㈡ 求空氣污染的英語四級作文 air pollution 120個字左右

1.

Air pollution is one of the major problems of the modern world. A great deal of energy is needed to run the factories of modern instrial nations. Automobile, trains, planes and busses need energy, too. Nearly all of this energy is proced by burning fuels. The burning proces wastes, some of which remain in the air, causing air pollution.
Scientists are finding ways to stop air pollution especially in big instrial areas and densely-populated cities. They are studying new ways of generating electricity that may be less damaging to the environment. In the meantime, many power plants are being modernized to give off less polluted material. Also, engineers try to design and locate new power plants to do minimum damage to the environment.
However, it may be that we still have a long way to go before we have a "clean" world. Nearly all of the countries are trying hard to prevent and control air pollution. There indeed seems to be no end to tasks that environmentalists will be required to do. People will continually find new ways to control pollution.

2.

The impact of air pollution on climate

Air pollution is now discussing how they affect climate. The most serious air pollution is generated by burning: the burning of sulfur in coal and oil, will proce sparse oxides; air to participate in high-temperature reaction, will proce nitrogen oxides; will proce incomplete combustion of hydrocarbons and carbon monoxide; while combustion of pyrolysis gasoline, but also release lead; ... .... However, even the cleanest fuel combustion will proce carbon dioxide. Of course, the animal's breathing process, the same release carbon dioxide, and that of carbon dioxide into the atmosphere, about 80% came from breathing, only 20% from fuel combustion. However, the burning destroyed the natural balance of carbon dioxide, so that the concentration of atmospheric carbon dioxide increased year by year, which may cause the "greenhouse effect", so that the earth's rising temperatures.
Turbidity current growth rate of the Earth, or even greater than the concentration of combustion caused by cO2 growth rate, therefore, atmospheric turbidity will influence the Earth's climate can not be ignored. The increase in turbidity over the world there are many reasons, such as fuel consumption increase, fuel increase in agricultural machinery, mechanized farming, and so an increase in Young earth.

In addition to the greenhouse effect and atmospheric turbidity may affect the Earth's climate, other factors such as sunspot activity, etc., to some extent also affect the Earth's climate. Sunspot activity since 1900 are constantly increasing. As the sunspot can increase the amount of solar radiation and thus cause rising temperatures.

The air pollution on the Earth's climate, they are not scientifically conclusive evidence on the. Most of was a bold extrapolation.

㈢ 如何練英語4級聽力，有什麼好方法推薦嗎

首先查看「學習通」有專門的英語真題，對於某個地方聽不懂，應反復聽多幾次。如果還是不懂，這時候我們就要看看原文了。這樣來加深印象遇到不懂的單詞，一定要及時查她的意思，不能拖。然後讀五遍熟記他。最後，聽力這種東西是很講感覺的，平時有事沒事，一定要多練。不能有三天打魚兩天曬網，不然只是一直在做無用功，浪費時間。（一）新聞聽力
這道題大家應該不陌生吧，我想說的是，找關鍵詞就對了！正式聽之前，利用前面讀Directions的時間，快速瀏覽1遍各個選項，這樣聽的時候就有重點了。
那麼四級英語聽力怎麼練？對於新聞類的聽力，一招制敵，那就是找關鍵詞！大家可以看看下面這5點：
①首尾原則：重點聽首尾處，一般都是考點；
②時間變更處：時態或者不同時間段發生的變化。
③數字處：與年代、金錢、比例、人口等數字有關的信息，重點聽。
④專有名詞處：重點聽新的概念、組織、機構
關於聽力材料的選擇，建議以真題為主，VOA或者BBC聽力材料為輔，真題，裡面聽力部分有一些解題新思路，還挺實用的，閱讀也是一詞一句挨著分析的，很適合英語基礎弱的人用。（二）練真題聽力的具體方法
●第1遍：先完整地做1遍題，把答案選出來。3
●第2遍：然後再細聽，每聽一句按暫停，聽懂則看原文確認鞏固，沒聽懂也看原文把不會的部分畫出努力記住。第二遍做完後從頭翻閱努力記住所有不會的點。
●第3遍：看前面題跟著聽力爭取努力每句聽懂，畫出關鍵詞，抓住主要內容，細節信息。
聽完3遍，最起碼要能聽懂大體意思，知道關鍵詞句在哪出現。一開始如果聽不懂，就先看聽力原文，先把單詞弄懂，再對著音頻多聽幾遍。等你差不多熟悉語感後，你再聽四級聽力，就會覺得比較簡單。

㈣ 考英語4級聽力耳機接收信號不好怎麼辦

原因及處理方法如下：
1.無線網路距離較遠，會導致接收信號不好便會一卡一內卡的。
2.電池電量不容足或電池質量過差導致電壓不足，將耳機充電或換塊電池便好。
3.藍牙耳機就是將藍牙技術應用在免持耳機上，讓使用者可以免除惱人電線的牽絆，自在地以各種方式輕鬆通話。

㈤ 歷年英語4級聽力怎麼下載

去書店買歷年四級的全真試題，有送MP3光碟讓你做聽力的，而且有些還會附上作文跟高頻詞彙的MP3。或者你也可以去網上做歷年的真題，都能搜到但要花些功夫，建議多做做題目熟悉答題順序

㈥ 公共英語等級考試4級（PETS 4)聽力錄音

抄這位朋友，這是高等教育出版社的PETS4級教程聽力，裡面有PETS4級教材中每單元課文和閱讀的音頻材料，可以用作PETS4級聽力練習，需要的話直接下載就行了。

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