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根據(jù)下面句子及所給漢語注釋．寫出空缺處單詞的正確形式。(每空只寫一詞)

Because of his special experience, he was chosen to be an ________(助理)to the president for energy affairs．

根據(jù)下面句子及所給漢語注釋．寫出空缺處單詞的正確形式。(每空只寫一詞)

It is ________(危險地)for children under five years old to be left alone at home．

根據(jù)下面句子及所給漢語注釋．寫出空缺處單詞的正確形式。(每空只寫一詞)

They look like the teeth of a ________(兇猛的)animal．

根據(jù)下面句子及所給漢語注釋．寫出空缺處單詞的正確形式。(每空只寫一詞)

________(水桶)are often used for holding and carrying water．

根據(jù)下面句子及所給漢語注釋．寫出空缺處單詞的正確形式。(每空只寫一詞)

The baby in the next room ________(睡醒)and began to cry．

根據(jù)下面句子及所給漢語注釋．寫出空缺處單詞的正確形式。(每空只寫一詞)

My ________(最喜歡的)colour is green．

根據(jù)下面句子及所給漢語注釋．寫出空缺處單詞的正確形式。(每空只寫一詞)

I hope to be back in a ________(兩星期)．

根據(jù)下面句子及所給漢語注釋．寫出空缺處單詞的正確形式。(每空只寫一詞)

She ________(提醒)me that I hadn't written to Mother．

根據(jù)下面句子及所給漢語注釋．寫出空缺處單詞的正確形式。(每空只寫一詞)

The course will start in ________(十二月)．

請認(rèn)真閱讀下列短文，并根據(jù)所讀內(nèi)容在文章后表格中的空格里填入一個最恰當(dāng)?shù)膯卧~。注意：每個空格只填1個單詞。

　　World's Fairs originated in the French tradition of national exhibitions, a tradition that ended with the French Industrial Exposition of 1844 held in Paris．It was soon followed by other national exhibitions in continental Europe, and finally came to London where the first real international exhibition was held．

　　Since their start in 1851, the character of world expositions has developed gradually．Three eras can be distinguished：the era of industrialization, the era of cultural exchange, and the era of nation branding．

　　The first era could be called the era of industrialization and covered the period from 1851 to 1938．In these days, world expositions were especially focused on trade and famous for the display of technological inventions and advancements．World expositions were the　platform where the state of the art in science and technology from around the world was brought together．Inventions, such as the telephone were first presented during this era．An important part of the image of World's Fairs stems from this first era．

　　The 1939 New York World's Fair and the 1949 Stockholm World's Fair were different from the original focus of the expositions．From then on, World's Fairs became more strongly based on a specific theme of cultural significance, and began to address issues of humankind．Technology and inventions remained important, but no longer as the principal subjects of the Fair．Cross-cultural dialogue and the exchange of solutions became defining elements of the expos．It was also during this time, specifically in the 1960s, that BIE organizers started calling World's Fairs “Expo's”．

　　From Expo'88 in Brisbane onwards, countries started to use World Expositions more widely and more strongly as a platform to improve their national images through their pavilion(展館), where a strong national image is a key asset(財產(chǎn)), pavilions became advertising campaigns, and the Expo a channel for nation branding．As well as cultural and symbolic reasons, organizing countries also use the world exposition to brand themselves．

　　Expo 2010 in Shanghai has been successfully held．2017 will see a recognized exposition．2020 will see a registered category of exposition．Bidding may begin as early as 2011 for this larger sized exposition．There are citizen efforts in American cities with the intention of bringing a World's Fair back to the United States．