Choose A, B, C, or D that best completes each sentence.

Question: Son Doong Cave, _______ in 2009, is believed to contain the world’s largest cave passage

A. first explored

B. to explore first

C. was first explored

D. exploring first

VI. Read the passage and choose the correct answer A, B, C, or D for each question.

                                                                  Son Doong Cave

      Located in the limestone mountains of Phong Nha - Ke Bang National Park. Son Doong Cave was first found in 1991 by Ho Khanh, a local man. In 2009, the cave was explored and published by a group of scientists from the British Cave Research Association.  Son Doong Cave was formed from 2 to 5 million years ago when the river flowed through the limestone mountain area and was buried. The water eroded limestone and created an underground tunnel. In soft limestone areas, the collapse of the tunnel ceiling formed large holes which became giant domes afterward. The cave is about 200m high, 200m wide, and at least 8 5km long. Especially, Son Doong consists of two entrances, which are unique among explored caves in Phong Nha - Ke Bang National Park. Exploring the cave, visitors were surprised with the spectacular scenery of numerous stalactites of which some giant stalagmites are more than 70 meters high. Deep inside the cave exists a grandiose tropical jungle called the “Garden of Eden" by the explorers. The jungle is home to a diversified system of fauna and flora. Besides, the cave possesses a 2.5-kilometer underground river. Not far from the “Garden of Eden” lies an enormous “pearl collection” consisting of tens of thousands of small stone pieces in dry ponds, contributing to the magnificent beauty of the cave.

    1. The reason why Son Doong Cave was formed is that ________.

A. an underground tunnel was buried in the area            B. the limestone areas were soft 

C.it only happened from 2 to 5 million years ago             D. the river was buried in the limestone mountains

   2. The most important feature of “Garden of Eden” is ____________. 

A.the biodiversity                                       B. giant stalagmites 

C. the biggest length                                 D. the river below

   3. We can infer from the passage that ________. 

A.tunnels and giant domes were formed at the same time 

B. “pearl collection” contains a lot of precious stones 

C.we can live in the cave with the air and water 

D. “Garden of Eden” is in the underground river

   4. All of the following are the wonderful features of Son Doong Cave EXCEPT ________. 

A. tropical jungle inside with the biodiversity 

B.spectacular scenery of numerous stalactites and stalagmites 

C.a river flowing over 2.5 kilometers along the cave 

D.the big sizes of the cave and the giant domes

   5. The thing that makes it different from other caves in Phong Nha – Ke Bang National Park is _______. 

A. stalactites and stalagmites                                    B. the two entrances into the cave 

C. its discovery by a local man                                  D. large holes in the ceiling 

Ex 1: Choose the correct answers:

                         Son Doong – The World’s Largest Cave

     Located in the heart of Phong Nha – Ke Bang National Park in Vietnam’s Quang Binh province, Son Doong (Mountain River Cave) is one of the most captivating (1)………….. that can be experienced in Southeast Asia.

     At about 9 kilometres in length, 200 metres in width and 150 metres in height, it is the largest cave in the world with the capability of fitting the entire city streets and skyscrapers. It is also home to a beautiful river, (2)………….. jungles and cave ecosystems. One of the most amazing features of this giant (3)………….. is rare cave pearls that have been shaped by water drops for centuries and some of them are as big as baseballs.

     A trek through the cave to (4)………….. the spectacular and unique limestone formations and explore lush jungles is a must for those who love untouched natural beauty. Besides, taking a boat ride or going swimming in the clear water of the river running through the cave is a fantastic (5)………….. . Don’t miss out on a visit to Son Doong Cave. Its (6)………….. natural beauty will make your adventurous trip unforgettable.

1. A. region B. destinations C. attraction

2. A. clear B. simple C. pristine

3. A. cavern B. lake C. waterfall

4. A. admire B. admiring C. admired

5. A. experienced B. experience C. experiencing

6. A. boring B. astounding C. popular

Read the passage, and choose the correct answer A, B, C or D for each question.

Son Doong Cave

Located in the limestone mountains of Phong Nha - Ke Bang National Park. Son Doong Cave was first found in 1991 by Ho Khanh, a local man. In 2009, the cave was explored and published by a group of scientists from British Cave Research Association.

Son Doong Cave was formed from 2 to 5 million years ago, when the river flowed through the limestone mountain area and was buried. The water eroded limestone and created an underground tunnel. In soft limestone areas, the collapse of tunnel ceiling formed large holes which became giant domes afterward. The cave is about 200m high, 200m wide and at least 8 5km long. Especially, Son Doong consists of two entrances, which is unique among explored caves in Phong Nha - Ke Bang National Park. Exploring the cave, visitors were surprised with spectacular scenery of numerous stalactites of which some giant stalagmites are more than 70 metres high. Deep inside the cave exists a grandiose tropical jungle called “Garden of Eden" by the explorers. The jungle is home to a diversifiedsystem of fauna and flora. Besides, the cave possesses a 2.5-kilometre underground river. Not far from the “Garden of Eden” lies an enormous “pearl collection” consisting of tens of thousands of small stone pieces in dry ponds, contributing to magnificent beauty of the cave.

The thing that makes it different from other caves in Phong Nha – Ke Bang National Park is ……….

A. stalactites and stalagmites

B. the two entrances into the cave

C. its discovery by a local man

D. large holes in the ceiling

Read the passage, and choose the correct answer A, B, C or D for each question.

Son Doong Cave

Located in the limestone mountains of Phong Nha - Ke Bang National Park. Son Doong Cave was first found in 1991 by Ho Khanh, a local man. In 2009, the cave was explored and published by a group of scientists from British Cave Research Association.

Son Doong Cave was formed from 2 to 5 million years ago, when the river flowed through the limestone mountain area and was buried. The water eroded limestone and created an underground tunnel. In soft limestone areas, the collapse of tunnel ceiling formed large holes which became giant domes afterward. The cave is about 200m high, 200m wide and at least 8 5km long. Especially, Son Doong consists of two entrances, which is unique among explored caves in Phong Nha - Ke Bang National Park. Exploring the cave, visitors were surprised with spectacular scenery of numerous stalactites of which some giant stalagmites are more than 70 metres high. Deep inside the cave exists a grandiose tropical jungle called “Garden of Eden" by the explorers. The jungle is home to a diversifiedsystem of fauna and flora. Besides, the cave possesses a 2.5-kilometre underground river. Not far from the “Garden of Eden” lies an enormous “pearl collection” consisting of tens of thousands of small stone pieces in dry ponds, contributing to magnificent beauty of the cave.

The reason why Son Doong Cave was formed is that ………..

A. an underground tunnel was buried in the area

B. the limestone areas were soft

C.it only happened from 2 to 5 million years ago

D. the river was buried in the limestone mountains

Read the passage, and choose the correct answer A, B, C or D for each question.

Son Doong Cave

Located in the limestone mountains of Phong Nha - Ke Bang National Park. Son Doong Cave was first found in 1991 by Ho Khanh, a local man. In 2009, the cave was explored and published by a group of scientists from British Cave Research Association.

Son Doong Cave was formed from 2 to 5 million years ago, when the river flowed through the limestone mountain area and was buried. The water eroded limestone and created an underground tunnel. In soft limestone areas, the collapse of tunnel ceiling formed large holes which became giant domes afterward. The cave is about 200m high, 200m wide and at least 8 5km long. Especially, Son Doong consists of two entrances, which is unique among explored caves in Phong Nha - Ke Bang National Park. Exploring the cave, visitors were surprised with spectacular scenery of numerous stalactites of which some giant stalagmites are more than 70 metres high. Deep inside the cave exists a grandiose tropical jungle called “Garden of Eden" by the explorers. The jungle is home to a diversifiedsystem of fauna and flora. Besides, the cave possesses a 2.5-kilometre underground river. Not far from the “Garden of Eden” lies an enormous “pearl collection” consisting of tens of thousands of small stone pieces in dry ponds, contributing to magnificent beauty of the cave.

The reason why Son Doong Cave was formed is that ………..

A. an underground tunnel was buried in the area

B. the limestone areas were soft

C.it only happened from 2 to 5 million years ago

D. the river was buried in the limestone mountains

Read the passage, and choose the correct answer A, B, C or D for each question.

Son Doong Cave

Located in the limestone mountains of Phong Nha - Ke Bang National Park. Son Doong Cave was first found in 1991 by Ho Khanh, a local man. In 2009, the cave was explored and published by a group of scientists from British Cave Research Association.

Son Doong Cave was formed from 2 to 5 million years ago, when the river flowed through the limestone mountain area and was buried. The water eroded limestone and created an underground tunnel. In soft limestone areas, the collapse of tunnel ceiling formed large holes which became giant domes afterward. The cave is about 200m high, 200m wide and at least 8 5km long. Especially, Son Doong consists of two entrances, which is unique among explored caves in Phong Nha - Ke Bang National Park. Exploring the cave, visitors were surprised with spectacular scenery of numerous stalactites of which some giant stalagmites are more than 70 metres high. Deep inside the cave exists a grandiose tropical jungle called “Garden of Eden" by the explorers. The jungle is home to a diversifiedsystem of fauna and flora. Besides, the cave possesses a 2.5-kilometre underground river. Not far from the “Garden of Eden” lies an enormous “pearl collection” consisting of tens of thousands of small stone pieces in dry ponds, contributing to magnificent beauty of the cave.

We can infer from the passage that …………..

A. tunnels and giant domes were formed at the same time

B. “pearl collection” contains a lot of precious stones

C. we can live the cave with the air and water

D. “Garden of Eden” is in the underground river

V. Read the paragraph, then do the tasks given below. (2ms)

Phong Nha - Ke Bang is a national park and UNESCO World Heritage Site in Quang Binh Province in the North Central Coast region, about 500 km south of Hanoi. It is situated in a limestone zone of 2,000 km2 in Vietnam and borders another limestone zone of 2,000 km2 in Laos. The core zone of this national park covers 857.54 km2 and a buffer zone of 1,954 km2. This national park was listed in UNESCO's World Heritage Sites in 2003.

Phong Nha - Ke Bang is famous for its cave systems because it is composed of 300 caves. Sơn Đoòng Cave, which was discovered in the 2009 survey by British and Vietnamese explorers, is considered the largest cave in the world.

A. T/ F sentences.

1. _______ Phong Nha - Ke Bang is in the south of Vietnam.

2. _______ It was recognized as a World Heritage in 2013.

3. _______ American explorers discovered Sơn Đoong Cave.

4. _______ Son Đoong Cave is considered the largest cave in the world.

B. Answer the questions.

1. Where is Phong Nha - Ke Bang national park?

...............................................................................................................

2. How many caves does Phong Nha - Ke Bang have?

...............................................................................................................

Read the passage, and choose the correct answer A, B, C or D for each question.

Son Doong Cave

Located in the limestone mountains of Phong Nha - Ke Bang National Park. Son Doong Cave was first found in 1991 by Ho Khanh, a local man. In 2009, the cave was explored and published by a group of scientists from British Cave Research Association.

Son Doong Cave was formed from 2 to 5 million years ago, when the river flowed through the limestone mountain area and was buried. The water eroded limestone and created an underground tunnel. In soft limestone areas, the collapse of tunnel ceiling formed large holes which became giant domes afterward. The cave is about 200m high, 200m wide and at least 8 5km long. Especially, Son Doong consists of two entrances, which is unique among explored caves in Phong Nha - Ke Bang National Park. Exploring the cave, visitors were surprised with spectacular scenery of numerous stalactites of which some giant stalagmites are more than 70 metres high. Deep inside the cave exists a grandiose tropical jungle called “Garden of Eden" by the explorers. The jungle is home to a diversifiedsystem of fauna and flora. Besides, the cave possesses a 2.5-kilometre underground river. Not far from the “Garden of Eden” lies an enormous “pearl collection” consisting of tens of thousands of small stone pieces in dry ponds, contributing to magnificent beauty of the cave.

The most important feature of “Garden of Eden” is ………

A.the biodiversity

B. giant stalagmites

C. the biggest length

D. the river below