9.This Saturday night at 8:30,all the lights will be shut off at the Tokyo in Japan.The Brandenburg Gate in Berlin and the Eiffel Tower in Paris are also expected to(16)go dark.So is the Empire State Building in New York and buildings in other cities around the world.
The lights will stay off for one hour for an event called Earth Hour.The observance(17)is organized by a conservation group,the World Wide Fund for Nature,also known as the World Wild Fund.For the fourth year,people are being urged to (18)turn off their lights for one hour to call attention to the issue of climate change.The group says climate change is one of the (19)greatest threatsfacing wildlife and nature.
The first Earth Hour was held in 2007in Sydney,Australia.Organizers said more than 2,000businesses and two million people took part.(20)Since then,Earth Hour has grown into an international event.People in more than 4,000cities in 88countries took part last year.

分析 文章講述了地球一小時活動.為了引起人們對地球氣候改變的重視,地球保護組織和世界生物基金會組織了關(guān)燈一小時的活動.現(xiàn)在已經(jīng)成為國際上的一件大事,很多城市和國家都參與進來.

解答 答案:16.go dark;考查句意理解.前面說所有的燈都關(guān)閉了,當然會一片漆黑.    
17.is organized;考查句意理解.后文出現(xiàn)了organizers,說明是組織這項活動;organize與主語observance構(gòu)成動賓關(guān)系,要用被動語態(tài). 
18.turn off;考查語境理解.文章講述的是這項活動是通過關(guān)燈來引起人們對地球氣候變化的重視. 
19.greatest threats;考查語境推斷.文章講述了野生動植物和大自然面臨威脅,而氣候變化是其中最大的威脅之一.  
20.Since then;考查語法知識和句意理解.句中Earth Hour has grown into an international event用的是現(xiàn)在完成時態(tài),表示結(jié)果;要用since then作時間狀語,表示從那時起.

點評 語法填空題是考查學(xué)生的語言運用能力.解題時,要在理解文章的基礎(chǔ)上,靈活運用語法知識,如詞性,時態(tài),名詞單復(fù)數(shù),連接詞,代詞,冠詞等判斷空白處應(yīng)填寫的內(nèi)容.答完后,還要通讀全文,核對所填單詞形式是否正確,是否符合語境.

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