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Burj Khalifa Tower(哈利法塔) is the tallest building in the world now. It is as tall as 828 meters and taller than any other manmade(人造的) building. It is located(坐落) in Dubai, United Arab Emirates. It opened on January 4, 2010. It was called Burj Dubai(迪拜塔). People began to build it in September, 2004. The building has 162 floors and the total cost for the Burj Khalifa project was about $1.5 billion.
Dubai has the only seven-star hotel in the world—Burj AlArab. It is the most beautiful and expensive hotel in the world. It opened in 1999. Its height is 321 meters and it is about four meters lower than the Eiffel Tower. It attracts more and more people especially(尤其) rich ones to travel there. It is not only a hotel, but also a scenic spot for visitors.

1.Where is is the tallest building in the world?

A It is in Toronto, Canada.

B It is in New York, the US.

C It is in Dubai, United Arab Emirates.

D It is in Shanghai, China.

解析：选C。C 细节理解题。根据第一段第一和第三句可知，2004年开始修建，2010年开放，由此可推断至少花了五年以上才修好，故选C。　

2.How long did it take people to build Burj Khalifa Tower?

A Two years.

B Less than three years.

C Four years.

D More than five years.

解析：选D。D 细节理解题。根据第一段It opened on January 4, 2010.和People began to build it in September, 2004.可知，故选D。

3.How tall is the Eiffel Tower?

A It is 321 meters tall.

B It is about 325 meters tall.

C It is more than 828 meters.

D It is as tall as Burj AlArab.

解析：选B。B 细节理解题。根据第二段Its height is 321 meters and it is about four meters lower than the Eiffel Tower.”可知，该酒店高度为321米，比埃菲尔铁塔矮4米，可推算出埃菲尔铁塔高约325米，故选B。　

4.Burj Al-Arab is __________.

A the tallest building in the world

B the most expensive hotel in the world

C the old name of Burj Dubai

D the only seven-star hotel in the world

解析：选D。D 细节理解题。根据第二段第一句可知Burj Al-Arab是世界上唯一的七星级酒店，故选D。　

5.The passage is mainly about __________.

A people

B buildings

C science

D places

解析：选B。B 细节理解题。通读全文可知，本篇短文介绍了哈利法塔和阿拉伯塔酒店，是关于建筑物的，故选B。