DO ALL VOLCANOES ERUPT ?
Some volcanoes are always (1) ______. They are called active volcanoes. Mount Etna in Italy is an
active (2) ______.
Some volcanoes have not erupted since prehistoric times. These are (3) ______ extinct volcanoes.
Most of the Hawaiian Islands are extinct volcanoes. These volcanoes (4) ______ have a hot spot under
them. They (5) ______erupt anymore.
Some volcanoes have not erupted for a long time, (6) ______ they could erupt again. These are called
dormant volcanoes.
Scientists try to figure out (7) ______ volcanoes will erupt. Studying volcanoes is hard and dangerous
work. Scientists drill into volcanoes. They (8) ______ maps of the inside of the volcanoes. They use
satellites to study volcanoes (9) ______ space. Scientists have been able to predict a few eruptions. But it
is not (10) ______ to tell what a volcano might do.
11. A. erupting B. running C. going D. firing
12. A. mountain B. volcano C. river D. hill
13. A. named B. thought C. called D. said
14. A. any longer B. any more C. not more D. no longer
15. A. won’t B. can not C. should not D. may not
16. A. and B. or C. but D. so
17. A. where B. why C. that D. when
18. A. do B. create C. build D. make
19. A. in B. from C. into D. out of
20. A. easy B. difficult C. able D. good

                                        DO ALL VOLCANOES ERUPT ?
Some volcanoes are always (1) ______. They are called active volcanoes. Mount Etna in Italy is an
active (2) ______.
Some volcanoes have not erupted since prehistoric times. These are (3) ______ extinct volcanoes.
Most of the Hawaiian Islands are extinct volcanoes. These volcanoes (4) ______ have a hot spot under
them. They (5) ______erupt anymore.
Some volcanoes have not erupted for a long time, (6) ______ they could erupt again. These are called
dormant volcanoes.
Scientists try to figure out (7) ______ volcanoes will erupt. Studying volcanoes is hard and dangerous
work. Scientists drill into volcanoes. They (8) ______ maps of the inside of the volcanoes. They use
satellites to study volcanoes (9) ______ space. Scientists have been able to predict a few eruptions. But it
is not (10) ______ to tell what a volcano might do.
1. A. erupting B. running C. going D. firing
2. A. mountain B. volcano C. river D. hill
3. A. named B. thought C. called D. said
4. A. any longer B. any more C. not more D. no longer
5. A. won’t B. can not C. should not D. may not
6. A. and B. or C. but D. so
7. A. where B. why C. that D. when
8. A. do B. create C. build D. make
9. A. in B. from C. into D. out of
10. A. easy B. difficult C. able D. good

II. Chọn một đáp án trong số A, B, C hoặc D điền vào mỗi chỗ trống để hoàn thành đoạn văn sau.

DO ALL VOLCANOES ERUPT?

Some volcanoes are always (1) _________. They are called active volcanoes. Mount Etna in Italy is an active (2) __________. Some volcanoes have not erupted since prehistoric times. These are (3) _________ extinct volcanoes. Most of the Hawaiian Islands are extinct volcanoes. These volcanoes no longer have a hot spot under them. They can not erupt anymore. Some volcanoes have not erupted for a long time, but they could erupt again. These are called dormant volcanoes. (dormant : temporarily inactive)

Scientists try to figure out when volcanoes will erupt. Studying volcanoes is hard and dangerous work. Scientists drill into volcanoes. They make maps of the inside of the volcanoes. They use satellites to study volcanoes (4) ___________ space. Scientists have been able to predict a few eruptions. But it is not (5) _________to tell what a volcano might do.

1. A. erupting B. running C. going D. firing

2. A. mountain B. volcano C. river D. hill

3. A. named B. thought C. called D. said

4. A. in B. from C. into D. out of

5. A. easy B. difficult C. able D. good

III. Đọc đoạn văn sau và trả lời các câu hỏi.

I come from Switzerland. I came to London six months (1) _____ to learn English. I haven’t met many English people yet, only my teachers. I started learning English at school in Switzerland (2) _____ I was eleven, so I have learn it for nearly ten years. At first in London, I couldn’t understand anything, but now my English (3) ____ improved. I have just taken an exam. If I pass, I will move into the next class. I’m excited today because my parents (4) _____ will come tomorrow to stay with me for a few days and I (5) _____ them for a long time. They have never been to England and they can’t speak English.

1. A. ago B. before C. last D. after

2. A. because B. that C. so D. when

3. A. were B. are C. is D. have been

4. A. moved B. will move C. could move D. would move

5. A. didn’t see B. haven’t seen C. don’t see D. hasn’t seen

Read the passage and choose the best answer to each question.

Volcanoes have been erupting on the earth for millions of years. More than five hundred of them still erupt today. These are called active volcanoes. Volcanoes are located in belts or chains. They are found where the earth’s crust is weak. The weak spots let the hot rock escape when the volcano erupts.

Many volcano belts are mountain ranges along the edges of continents. One belt runs along the western coast of South America up through the western part of the United States. Other volcanoes are found in ocean basins.

About three-fifths of all active volcanoes in the world are in the Pacific Ocean. Many of these volcanoes erupt under the water. The Hawaiian Islands were built by volcanoes that began erupting under water and finally reached the surface of the ocean.

1. The passage says that about five hundred volcanoes_____.

A. will erupt this year B. are still active C. are located under water D. have been discovered

2. Most of the active volcanoes are located in_____.

A. the Pacific Ocean B. South America C. the Atlantic Ocean D. the western United States

3. Which of the following is NOT true?

A. Volcanoes are found in belts or chains. B. The earth’s crust is weak along mountain ranges. C. Hot rock escapes during volcano eruption. D. Volcanoes can be found in the ocean basins.

4. The Hawaiian Islands were built by volcanoes that_____.

A. began erupting under water B. formed a mountain range under water

C. finally reached the surface of the ocean D. both A and C

5. The best title for this selection may be_____.

A. How the Hawaiian Islands Were Built B. At the Bottom of the Ocean

C. The Earth’s Volcanoes D. Why Volcanoes Erupt

Volcanoes have been(1)………..on the earth for millions of years. More than 500 still erupt today. These are (2)………..active volcanoes. Volcanoes are located in belts or chains. They are found (3)…………the earth,s crust is weak. The weak spots let the hot rock (4)………..when the volcano erupts. Many volcano belts are mountain ranges along the edges of continents. One belt runs along the western (5)………..of South America up through the western part of the United States. Other volcanoes are (6)………..in ocean basins. About three-ffths of all active volcanoes in the world are in the Pacific Ocean. Many of these volcanoes erupt (7)………..water. The Hawaiian Islands were (8)……….by volcanoes that began erupting under water and finally reached the surface of the ocean.

Volcanoes have been(1)………..on the earth for millions of years. More than 500 still erupt today. These are (2)………..active volcanoes. Volcanoes are located in belts or chains. They are found (3)…………the earth,s crust is weak. The weak spots let the hot rock (4)………..when the volcano erupts. Many volcano belts are mountain ranges along the edges of continents. One belt runs along the western (5)………..of South America up through the western part of the United States. Other volcanoes are (6)………..in ocean basins. About three-ffths of all active volcanoes in the world are in the Pacific Ocean. Many of these volcanoes erupt (7)………..water. The Hawaiian Islands were (8)……….by volcanoes that began erupting under water and finally reached the surface of the ocean.

A volcano is an opening in the earth's surface through (14) lava, hot th gases, and rock fragment erupt. (15) 20 Lu Hoang Tri an opening occurs when melted rock from depth within the earth blasts through the surface. Most volcanoes are at the p of mountains, and the mountains themselves are also called volcanoes Eruptions of volcanic mountains are spectacular (16) huge fiery clouds rise over the mountains, an (17) sides. In other eruptions, red-hit ash and cinders shoot out the mountaintop, and large chunks of hot rock are blasted (18) few eruptions are so (19) eruptions occur on volcanic islands. Such islands are the tops of volcanic islands in some eruptions, d glowing rivers of lava flow down into the air. A that they blow the mountain apart. Some from that have been built (20) from the ocean floor by repeated eruptions. Other eruptions occur along narrow cracks in the (21) floor

* 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 43 to 50.

  Most volcanoes are found along an imaginary belt, called the Ring of Fire, that encircles the Pacific Ocean. However, volcanic activity takes place in many far-flung regions of the world such as Hawaii, Iceland, Europe, and even the floor of the earth’s oceans. The leading theory as to why volcanic activity, as well as earthquakes, takes place when and where it does is called the theory of “plate tectonics”. The theory holds that the outer shell of the earth is divided into many different rigid sections of rock, called plates. These plates are not static, they are in continuous motion over a layer of partly melted rock. While their movement may appear insignificant, at only several inches per year, it is not. Indeed, the collisions between plates caused by this almost imperceptible movement can have catastrophic consequences. Volcanic activity and earthquakes are concentrated near the boundaries of these giant, moving plates.

  The majority of volcanoes are formed at te point where two plates collide. One of the plates is forced underneath the other. As the plate sinks, the earth’s heat and the friction of the movement cause a portion of the sinking plate to melt. This melted portion of plate is called magma, and when it reaches the earth’s surface it becomes a volcano. Volcanoes can also be created when two plates begin to diverge. Then, magma from below the earth’s crust moves up to fill the void between the two plates. Large quantities of lava spill out from the void. Volcanoes of this type usually are found not on land, but on the ocean floor. In extreme instances this can lead to the formation of gigantic, sunken mountain ranges like Mid-Atlantic Ridge that spans nearly the entire length of the Atlantic Ocean. The theory of plate tectonics also explains why some volcanic activity takes place so far from any known plate boundaries. Basically, these volcanoes are the result of huge column of magma, or plumes, that rise up and break through the surface of the earth.

 Which of the following is true about volcanoes formed at the point at which two plates diverged?

A. Most volcanoes are formed in this way 

B. Plate tectonic theory is not able to explain it 

C. The Mid- Atlantic Ridge is an example of this 

D. They do not involve magma