Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

Sylvia Earle is one of the world's most famous marine scientists and a National Geographic Explorer-inResidence. She loves to go diving in the ocean. She has spent a lot of her life both in and under the waves. Earle has led more than a hundred expeditions and she set a record for solo diving in 1,000-metre deep water. In total, she has spent more than 7,000 hours underwater.

Earle describes the first time she went to the ocean: ‘I was three years old and I got knocked over by a wave. The ocean certainly got my attention! It wasn’t frightening, it was thrilling. And since then I have been fascinated by life in the ocean.’

In the past, Earle was the chief scientist of the National Oceanic and Atmospheric Administration in the USA. Now one of her jobs is with Google Earth’s Ocean. Earle’s special focus is on developing a global network of areas on the land and in the ocean. This network will protect and support the living systems that are important to the planet. She explains why this is important: ‘When I first went to the Gulf of Mexico in the 1950s, the sea looked like a blue infinity. It seemed to be too large and too wild to be damaged by the action of people. Then, in a few decades, not thousands of years, the blue wilderness of my childhood disappeared. By the end of the 20th century, about 90 percent of the sharks, tuna, turtles, whales and many other large creatures had disappeared from the Gulf. They had been there for millions of years.’

Some people don’t understand why the ocean is so important to life on Earth. Earle explains that ‘the ocean is the foundation of our life support system. The ocean is alive. The living things in the ocean generate oxygen and take up carbon. If we don‟t have the ocean, we don’t have a planet that works.’

The Gulf of Mexico has had many problems, especially after the Deepwater Horizon Oil disaster of 2010, but Earle says, ‘In 2003 I found positive signs in clear, deep water far from the mouth of the Mississippi River. It was full of life. Large areas of the Gulf are not damaged. Protecting the most important places will be good for the future of the Gulf and for all of us’

How does the article illustrate specific problems in the marine environment?

A. by describing the situation in the Gulf of Mexico

B. through a history of Earle’s work in different organisations

C. by giving details of what Earle plans to do

D. by giving examples of the problem in various pla

b1 điền từ và trả lời câu hỏi

there is a lot of salt on earth, and it mixes very well with water. there is some salt in all water. Water on the........... runs into lakes and rivers. These rivers run into the seas and oceans. They carry a little salt............. them. Some of the ocean water moves into the air and clouds. It evaporates. Salt cannot evaporate. It.......... in the ocean.

some lakes do not have a river to carry the water and salt away. Some of the water leaves the lakes. It evaporates, but the salt cannot. these lakes are very salty. there are two ........ lakes like this. They are the Dead Sea in the Middle East and Great Salt Lake in the state of Utah in the USA. They are much.......... than the Alantic Ocean and the Parcific Ocean

1. What does salt mix well with?

2. Where does river water go?

3. Where does the salt in the ocean?

4. Which has more salt, rivers or oceans?

5. Name of the two famous salty lakes.

Read the following passage and choose the best option A, B, C or D to be used for each of the blanks to complete the following passage from 16 to 20.

Water is of vital importance to all living things. Without it, all living things will surely die. We also use a great (16)______ of water daily in our homes, in factories, and in power stations. Most of this water is fresh water and it comes to us from reservoirs, rivers and lakes.

The Earth's surface is (17)_____ by large areas of water which we call oceans and seas. If you have tasted the water from the sea, you will know that, unlike fresh water, seawater tastes salty. This is due to the (18)_____ of sodium chloride which comes from the land. Rivers carry it to the sea.

Although neither salt nor fresh water has any color, the sea often looks blue (19)______ the sunlight. The reason is that sunlight is made up of many colors. Some colors disappear quickly in the sea but blue light bounces back or is reflected, to the surface. This makes the sea look blue. (20)______ , a stormy sky will make the sea look grey.

Điền ô số 19

A. of 

B. within 

C. with 

D. in

Read the following passage and choose the best option A, B, C or D to be used for each of the blanks to complete the following passage from 16 to 20.

Water is of vital importance to all living things. Without it, all living things will surely die. We also use a great (16)______ of water daily in our homes, in factories, and in power stations. Most of this water is fresh water and it comes to us from reservoirs, rivers and lakes.

The Earth's surface is (17)_____ by large areas of water which we call oceans and seas. If you have tasted the water from the sea, you will know that, unlike fresh water, seawater tastes salty. This is due to the (18)_____ of sodium chloride which comes from the land. Rivers carry it to the sea.

Although neither salt nor fresh water has any color, the sea often looks blue (19)______ the sunlight. The reason is that sunlight is made up of many colors. Some colors disappear quickly in the sea but blue light bounces back or is reflected, to the surface. This makes the sea look blue. (20)______ , a stormy sky will make the sea look grey. 

Điền ô số 18

A. attraction 

B. presence 

C. advantage 

D. influence 

Read the following passage and choose the best option A, B, C or D to be used for each of the blanks to complete the following passage from 16 to 20.

Water is of vital importance to all living things. Without it, all living things will surely die. We also use a great (16)______ of water daily in our homes, in factories, and in power stations. Most of this water is fresh water and it comes to us from reservoirs, rivers and lakes.

The Earth's surface is (17)_____ by large areas of water which we call oceans and seas. If you have tasted the water from the sea, you will know that, unlike fresh water, seawater tastes salty. This is due to the (18)_____ of sodium chloride which comes from the land. Rivers carry it to the sea.

Although neither salt nor fresh water has any color, the sea often looks blue (19)______ the sunlight. The reason is that sunlight is made up of many colors. Some colors disappear quickly in the sea but blue light bounces back or is reflected, to the surface. This makes the sea look blue. (20)______ , a stormy sky will make the sea look grey. 

Điền ô số 20

A. Therefore 

B. Hence 

C. Consequently 

D. However 

Read the following passage and choose the best option A, B, C or D to be used for each of the blanks to complete the following passage from 16 to 20.

Water is of vital importance to all living things. Without it, all living things will surely die. We also use a great (16)______ of water daily in our homes, in factories, and in power stations. Most of this water is fresh water and it comes to us from reservoirs, rivers and lakes.

The Earth's surface is (17)_____ by large areas of water which we call oceans and seas. If you have tasted the water from the sea, you will know that, unlike fresh water, seawater tastes salty. This is due to the (18)_____ of sodium chloride which comes from the land. Rivers carry it to the sea.

Although neither salt nor fresh water has any color, the sea often looks blue (19)______ the sunlight. The reason is that sunlight is made up of many colors. Some colors disappear quickly in the sea but blue light bounces back or is reflected, to the surface. This makes the sea look blue. (20)______ , a stormy sky will make the sea look grey. 

Điền ô số 16

A. number 

B. measure 

C. quality 

D. amount 

Read the following passage and choose the best option A, B, C or D to be used for each of the blanks to complete the following passage from 16 to 20.

Water is of vital importance to all living things. Without it, all living things will surely die. We also use a great (16)______ of water daily in our homes, in factories, and in power stations. Most of this water is fresh water and it comes to us from reservoirs, rivers and lakes.

The Earth's surface is (17)_____ by large areas of water which we call oceans and seas. If you have tasted the water from the sea, you will know that, unlike fresh water, seawater tastes salty. This is due to the (18)_____ of sodium chloride which comes from the land. Rivers carry it to the sea.

Although neither salt nor fresh water has any color, the sea often looks blue (19)______ the sunlight. The reason is that sunlight is made up of many colors. Some colors disappear quickly in the sea but blue light bounces back or is reflected, to the surface. This makes the sea look blue. (20)______ , a stormy sky will make the sea look grey. 

Điền ô số 17

A. covered 

B. reserved 

C. constructed 

D. included 

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

Sylvia Earle is one of the world's most famous marine scientists and a National Geographic Explorer-inResidence. She loves to go diving in the ocean. She has spent a lot of her life both in and under the waves. Earle has led more than a hundred expeditions and she set a record for solo diving in 1,000-metre deep water. In total, she has spent more than 7,000 hours underwater.

Earle describes the first time she went to the ocean: ‘I was three years old and I got knocked over by a wave. The ocean certainly got my attention! It wasn’t frightening, it was thrilling. And since then I have been fascinated by life in the ocean.’

In the past, Earle was the chief scientist of the National Oceanic and Atmospheric Administration in the USA. Now one of her jobs is with Google Earth’s Ocean. Earle’s special focus is on developing a global network of areas on the land and in the ocean. This network will protect and support the living systems that are important to the planet. She explains why this is important: ‘When I first went to the Gulf of Mexico in the 1950s, the sea looked like a blue infinity. It seemed to be too large and too wild to be damaged by the action of people. Then, in a few decades, not thousands of years, the blue wilderness of my childhood disappeared. By the end of the 20th century, about 90 percent of the sharks, tuna, turtles, whales and many other large creatures had disappeared from the Gulf. They had been there for millions of years.’

Some people don’t understand why the ocean is so important to life on Earth. Earle explains that ‘the ocean is the foundation of our life support system. The ocean is alive. The living things in the ocean generate oxygen and take up carbon. If we don‟t have the ocean, we don’t have a planet that works.’

The Gulf of Mexico has had many problems, especially after the Deepwater Horizon Oil disaster of 2010, but Earle says, ‘In 2003 I found positive signs in clear, deep water far from the mouth of the Mississippi River. It was full of life. Large areas of the Gulf are not damaged. Protecting the most important places will be good for the future of the Gulf and for all of us’

What started Earle’s interest in the ocean?

A. a National Geographic explorer

B. a childhood experience

C. her love of diving

D. her fear of the waves