Read the passage and choose the best answers

Ha Long Bay is located in Quang Ninh Province, northeast Vietnam, just 180 km east of Hannoi; surrounded by Bai Tu Long Bay, Lan Ha Bay, Cat Ba Island, Tuan Chau Island and Ha Long City. While Ha Long is not a large area, it packs some 1,600 limestone islands and islets into its 1,553km2. Limestone towers, green islands and islets boast karst caves, caverns and grottoes, many hidden and still waiting to be discovered. Some islands are completely hollow. Framing the islands are gorgeous beaches, the emerald sea lapping gently on the soft, white sand. The Bay was first recorded as a UNESCO World Heritage Site in 1994 thanhks to its exceptional natural beauty and aesthetic importance. In 2000, it had the honour of being recognised the second time for its significant geomorphic features, as a billion-year-living proof of Earth's formation.
Many travellers are unaware that Ha Long Bay actually has an immense value to the world because of its rare concentration of biodiversity, culture and history. Hence, this uniqueness is exactly what makes Ha Long Bay a magical destination where travellers cannot wait to visit it. Cruising the green islands is the only way to truly experience Ha Long Bay. On a wooden junk or cruise vessel, you can take in the picture-perfect serenity of the area from balcony, sun deck and the front of the boat in complete luxury. Watch the sun rise and set over the Bay, all pink and orange and plump, and breathe the fresh air deep into your lungs, recharging your soul.
1. What is the best title of the passage?
A/ Ha Long Bay-the astonishing World Heritage Site in Viet Nam
B/ Ha Long-the city of caves and islands
C/ The history of Ha Long Bay
D/ Ha Long Bay, facts and figures
2. The word "framing" in the first paragraph is closest in meaning to __________.
A/ drawing
B/ surrounding
C/ forming
D/ circling
3. Ha Long Bay was recognised by UNESCO for its ___________.
A/ exceptional natural beauty.
B/ aesthetic importance
C/ significant geomorphic features.
D/ all of the above
4. According to the second paragraph, how can people experience Ha Long Bay?
A/ by bike 
B/ by airplane
C/ on foot
D/ by boat
5. Which of the following is NOT true according to the passage?
A/ Ha Long Bay is not the only bay in Quang Ninh Province.
B/ They still haven't discovered many islands in Ha Long Bay.
C/ Actually, the biodiversity does not contribute to the bay's value.
D/ Ha Long Bay is a good place for tourists to relax.