xong mọi người sang link này nhé 
https://lazi.vn/edu/exercise/1625953/when-did-the-british-explorers-find-the-whole-impressive-ecosystem
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of the natural world. You can view it from a long
Yes, I do. I often read books about natural wonders.
That's incredible! I want to visit the Great Barrier Reef one day.
Yes. The reef is very large, and it's the only living thing on earth visible from space.
So in your opinion, what is the most beautiful natural wonder?
E. READING
L Read the passage and answer the questions.
Boasting picturesque landscapes from the north to the south, Viet Nam is home to the
world's largest cave - Son Doong. Son Doong Cave is located in Phong Nha - Ke Bang
National Park, Quang Binh province. The cave contains a 5-km tunnel which can reach
a height of 250 metres and a width of 200 metres. The main cave is large enough to house
a 40-floor skyscraper. It's quite surprising that the first to discover this cave was a local
farmer in 1990, but it took almost two more decades for Son Doong to be rediscovered.
The team of locals and British explorers found the whole impressive ecosystem with a set
of caves, tunnels, beaches, lakes and rivers in 2009.
Now Son Doong is one of the world's greatest natural wonders, along with the Grand
Canyon, Victoria Falls, Mount Everest, etc. The first guided tours to the safe part of the
cave started in 2013. Adventurous travellers can book a trip to explore the magnificent
ecosystem and sleep in unique campsites at this mysterious cave.
1. Where is Son Doong Cave located?
Joy ! pringlave Located is in
Phong Nha-Ke Bang
2. How high and wide is the 5-km tunnel?
3. How large is the main cave?
the 5-km tunnel is height 200 metres and widtd 200
main cave is large enough to houx a 40-goo.
By
4. Did local farmer discover the cave in 1990?