On March 31, the Eiffel Tower celebrated its 130th anniversary since it opened.     1    (original) planned to last only 20 years, the people of Paris wisely decided to keep it standing,    2     (recognize) its importance. Millions of people     3     (visit) the tower so far, according to its official website.

The tower was created by the French engineer Gustave Eiffel and was first intended as the main entrance     4     the 1889 World’s Fair. It was built in a little over two years and faced criticism from some locals initially. However, it quickly captured the attention of fair visitors, attracting more than two million people. It also had a     5     (practice) use as a radio antenna during World War I.

Visitors today can choose to climb 1,665 steps or take one of the original elevator cars    6     (reach) the top. At the top of the tower,     7     the tower’s administrative office is located, guests can enjoy a drink at the champagne bar on the top floor.

Today, the Eiffel Tower is a symbol of France, representing a feeling of pride and thankfulness. It is a global icon that can bring together people from different     8    (background). The tower is not only     9     popular tourist destination but also a widely recognized symbol, a     10     (believe) held by many who appreciate its enduring charm.

2 . Libraries are places to preserve cultural heritage, develop information resources and carry out social education. Let’s look at some of the most beautiful libraries in the world.

The library is one of the most beautiful libraries in the world. Opened in 2011, this library is an important site for concerts, theatrical performances and film screenings. The design of the library is unique. The building is supported by 27 laminated (层压的) wood arches that hold the roof up.

The library is one of the largest and most important libraries in Italy. It preserves one of the most important collections of Greek, Latin and Asian manuscripts (手稿) in the entire world. Some of them are the most precious pieces. The library specializes in Venetian history and classic philology. Its collection of antique maps is also very significant.

Thanks to a recent restoration, a station that was once in ruins underwent an architectural change. The library might seem unremarkable from the outside, but the innovative project and its division into a train station, public library and cultural center have certainly made this building worth a visit.

The library is the main source of literary archives (档案), ancient manuscripts and rare books at Yale University, and it’s visited by students and researchers from around the world. Completed in 1963, the library is home to the Bollingen Prize for Poetry which is awarded biennially, and the Windham-Campbell Prizes which are awarded annually for fiction, literary essays, poetry, and theater.

3 . Hong Kong-Zhuhai-Macao Bridge (HZMB) opened on October 24, 2018. It's the longest cross-sea bridge in the world. The bridge is 55 kilometers long. It connects Hong Kong and Macao to the Chinese mainland city of Zhuhai. Construction (建筑工程) on the HZMB began in 2009. It is considered as one of the “seven wonders (奇迹) of the modern world”.

The HZMB is the only one in many ways. It can withstand wind speeds of up to 185km/h and earthquakes with magnitude (震级) of up to 8. It's designed to have a service life (寿命) of 120 years, 20 years longer than most bridges.

And It' s not just a bridge, but also part tunnel (隧道) and part island. In one section (部分), the bridge turns into a 6.7-km undersea tunnel. And the tunnel passes through two man-made islands. The tunnel is the world's longest undersea tunnel for road traffic, allowing large ships to continue passing through the sea area above the tunnel.

The HZMB makes it more convenient to travel between the three areas. It can shorten (缩短) the traveling time from Hong Kong to Zhuhai. People used to spend four hours, but now it takes about 45 minutes.

By making local cities and areas closer together, the HZMB helps the areas' development. It can develop the economy (经济) of Hong Kong, Macao and nine Guangdong cities.