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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 questionsAmbient divers are, unlike divers who go underwater in submersible vehicles of pressure resistant suits, exposed to the pressure and temperature of the surrounding ambient water. Of all types of diving, the oldest and simplest is free diving. Free divers may use no equipment at all, but most use a face mask, foot fins, and a snorkel. Under the surface, free...
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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

Ambient divers are, unlike divers who go underwater in submersible vehicles of pressure resistant suits, exposed to the pressure and temperature of the surrounding ambient water. Of all types of diving, the oldest and simplest is free diving. Free divers may use no equipment at all, but most use a face mask, foot fins, and a snorkel. Under the surface, free divers must hold their breath. Most free divers can only descend 30 to 40 feet, but some skilled divers can go as deep as 100 feet.

Scuba diving provides greater range than free diving. The word scuba stands for self-contained underwater breathing apparatus. Scuba divers wear metal tanks with compressed air or other breathing gases. When using open-circuit equipment, a scuba diver simply breathes air form the tank through a hose and releases the exhaled air into the water. A closed-circuit breathing device, also called a rebreather, filters out carbon dioxide and other harmful gases and automatically adds oxygen. This enables the diver to breathe the same air over and over. In surface-supplied diving, divers wear helmets and waterproof canvas suits. Today, sophiticated plastic helmets have replaced the heavy copper helmets used in the past.These divers get their air from a hose connected to compressors on a boat. Surface-supplied divers can go deeper than any other type of ambient diver.

The word “This” in bold in paragraph 2 refers to_________.

A. filtering out carbon dioxide 

B. adding oxygen 

C. exhaling air into the water 

D. filtering out harmful gases and adding oxygen.

1
16 tháng 11 2017

Đáp án D

Từ "This" in đậm trong đoạn 2 đề cập đến:

A. lọc ra carbon dioxide

B. thêm oxy

C. thở ra không khí vào trong nước

D. lọc ra khí độc hại và thêm oxy.

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 questionsAmbient divers are, unlike divers who go underwater in submersible vehicles of pressure resistant suits, exposed to the pressure and temperature of the surrounding ambient water. Of all types of diving, the oldest and simplest is free diving. Free divers may use no equipment at all, but most use a face mask, foot fins, and a snorkel. Under the surface, free...
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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

Ambient divers are, unlike divers who go underwater in submersible vehicles of pressure resistant suits, exposed to the pressure and temperature of the surrounding ambient water. Of all types of diving, the oldest and simplest is free diving. Free divers may use no equipment at all, but most use a face mask, foot fins, and a snorkel. Under the surface, free divers must hold their breath. Most free divers can only descend 30 to 40 feet, but some skilled divers can go as deep as 100 feet.

Scuba diving provides greater range than free diving. The word scuba stands for self-contained underwater breathing apparatus. Scuba divers wear metal tanks with compressed air or other breathing gases. When using open-circuit equipment, a scuba diver simply breathes air form the tank through a hose and releases the exhaled air into the water. A closed-circuit breathing device, also called a rebreather, filters out carbon dioxide and other harmful gases and automatically adds oxygen. This enables the diver to breathe the same air over and over. In surface-supplied diving, divers wear helmets and waterproof canvas suits. Today, sophiticated plastic helmets have replaced the heavy copper helmets used in the past.These divers get their air from a hose connected to compressors on a boat. Surface-supplied divers can go deeper than any other type of ambient diver.

Ambient divers are ones who_____

A. can descend to extreme depths

B. use submersible vehicles 

C. use no equipment

D. are exposed to the surrounding water

1
13 tháng 11 2017

Đáp án C

Thợ lặn trong bờ là những người:

A. có thể xuống đến độ sâu cực đoan

B. sử dụng xe chìm

C. không sử dụng thiết bị

D. được tiếp xúc với nước xung quanh

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 questionsAmbient divers are, unlike divers who go underwater in submersible vehicles of pressure resistant suits, exposed to the pressure and temperature of the surrounding ambient water. Of all types of diving, the oldest and simplest is free diving. Free divers may use no equipment at all, but most use a face mask, foot fins, and a snorkel. Under the surface, free...
Đọc tiếp

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

Ambient divers are, unlike divers who go underwater in submersible vehicles of pressure resistant suits, exposed to the pressure and temperature of the surrounding ambient water. Of all types of diving, the oldest and simplest is free diving. Free divers may use no equipment at all, but most use a face mask, foot fins, and a snorkel. Under the surface, free divers must hold their breath. Most free divers can only descend 30 to 40 feet, but some skilled divers can go as deep as 100 feet.

Scuba diving provides greater range than free diving. The word scuba stands for self-contained underwater breathing apparatus. Scuba divers wear metal tanks with compressed air or other breathing gases. When using open-circuit equipment, a scuba diver simply breathes air form the tank through a hose and releases the exhaled air into the water. A closed-circuit breathing device, also called a rebreather, filters out carbon dioxide and other harmful gases and automatically adds oxygen. This enables the diver to breathe the same air over and over. In surface-supplied diving, divers wear helmets and waterproof canvas suits. Today, sophiticated plastic helmets have replaced the heavy copper helmets used in the past.These divers get their air from a hose connected to compressors on a boat. Surface-supplied divers can go deeper than any other type of ambient diver.

What are the helmets that surface-supplied divers use today made from, according to the passage?

A. glass

B. copper 

C. plastic

D. canvas

1
24 tháng 1 2017

Đáp án C

Mũ bảo hiểm mà các thợ lặn cung cấp bề mặt sử dụng ngày nay được sản xuất là gì, theo đoạn văn?

Một ly

B. đồng

C. nhựa

D. canvas

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 questionsAmbient divers are, unlike divers who go underwater in submersible vehicles of pressure resistant suits, exposed to the pressure and temperature of the surrounding ambient water. Of all types of diving, the oldest and simplest is free diving. Free divers may use no equipment at all, but most use a face mask, foot fins, and a snorkel. Under the surface, free...
Đọc tiếp

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

Ambient divers are, unlike divers who go underwater in submersible vehicles of pressure resistant suits, exposed to the pressure and temperature of the surrounding ambient water. Of all types of diving, the oldest and simplest is free diving. Free divers may use no equipment at all, but most use a face mask, foot fins, and a snorkel. Under the surface, free divers must hold their breath. Most free divers can only descend 30 to 40 feet, but some skilled divers can go as deep as 100 feet.

Scuba diving provides greater range than free diving. The word scuba stands for self-contained underwater breathing apparatus. Scuba divers wear metal tanks with compressed air or other breathing gases. When using open-circuit equipment, a scuba diver simply breathes air form the tank through a hose and releases the exhaled air into the water. A closed-circuit breathing device, also called a rebreather, filters out carbon dioxide and other harmful gases and automatically adds oxygen. This enables the diver to breathe the same air over and over. In surface-supplied diving, divers wear helmets and waterproof canvas suits. Today, sophiticated plastic helmets have replaced the heavy copper helmets used in the past.These divers get their air from a hose connected to compressors on a boat. Surface-supplied divers can go deeper than any other type of ambient diver.

What does the word “descend” in the paragraph probably mean?

A. move to a lower level

B. climb to a higher place 

C. swim on the river bed

D. go up and down slowly

1
8 tháng 2 2017

Đáp án A

Từ " descend" trong đoạn văn có thể có nghĩa là gì?

A. chuyển sang chỗ thấp hơn

B. leo lên một nơi cao hơn

C. bơi trên lòng sông

D. đi lên và xuống chậm

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 questionsAmbient divers are, unlike divers who go underwater in submersible vehicles of pressure resistant suits, exposed to the pressure and temperature of the surrounding ambient water. Of all types of diving, the oldest and simplest is free diving. Free divers may use no equipment at all, but most use a face mask, foot fins, and a snorkel. Under the surface, free...
Đọc tiếp

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

Ambient divers are, unlike divers who go underwater in submersible vehicles of pressure resistant suits, exposed to the pressure and temperature of the surrounding ambient water. Of all types of diving, the oldest and simplest is free diving. Free divers may use no equipment at all, but most use a face mask, foot fins, and a snorkel. Under the surface, free divers must hold their breath. Most free divers can only descend 30 to 40 feet, but some skilled divers can go as deep as 100 feet.

Scuba diving provides greater range than free diving. The word scuba stands for self-contained underwater breathing apparatus. Scuba divers wear metal tanks with compressed air or other breathing gases. When using open-circuit equipment, a scuba diver simply breathes air form the tank through a hose and releases the exhaled air into the water. A closed-circuit breathing device, also called a rebreather, filters out carbon dioxide and other harmful gases and automatically adds oxygen. This enables the diver to breathe the same air over and over. In surface-supplied diving, divers wear helmets and waterproof canvas suits. Today, sophiticated plastic helmets have replaced the heavy copper helmets used in the past.These divers get their air from a hose connected to compressors on a boat. Surface-supplied divers can go deeper than any other type of ambient diver.

According to the passage, a free diver may use any of the following EXCEPT______

A. a rebreather 

B. a snorkel 

C. foot fins

D. a mask

1
10 tháng 3 2019

Đáp án A

Thợ lặn tự do có thể sử dụng bất kì cái gì trừ cái nào sau đây

A. một bình oxi

B. một ống thở

C. vây chân

D. mặt nạ

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 questionsAmbient divers are, unlike divers who go underwater in submersible vehicles of pressure resistant suits, exposed to the pressure and temperature of the surrounding ambient water. Of all types of diving, the oldest and simplest is free diving. Free divers may use no equipment at all, but most use a face mask, foot fins, and a snorkel. Under the surface, free...
Đọc tiếp

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

Ambient divers are, unlike divers who go underwater in submersible vehicles of pressure resistant suits, exposed to the pressure and temperature of the surrounding ambient water. Of all types of diving, the oldest and simplest is free diving. Free divers may use no equipment at all, but most use a face mask, foot fins, and a snorkel. Under the surface, free divers must hold their breath. Most free divers can only descend 30 to 40 feet, but some skilled divers can go as deep as 100 feet.

Scuba diving provides greater range than free diving. The word scuba stands for self-contained underwater breathing apparatus. Scuba divers wear metal tanks with compressed air or other breathing gases. When using open-circuit equipment, a scuba diver simply breathes air form the tank through a hose and releases the exhaled air into the water. A closed-circuit breathing device, also called a rebreather, filters out carbon dioxide and other harmful gases and automatically adds oxygen. This enables the diver to breathe the same air over and over. In surface-supplied diving, divers wear helmets and waterproof canvas suits. Today, sophiticated plastic helmets have replaced the heavy copper helmets used in the past.These divers get their air from a hose connected to compressors on a boat. Surface-supplied divers can go deeper than any other type of ambient diver.

When using closed-circuit devices, divers_______

A. exhale air into the water

B. hold their breath 

C. breathe the same air over and over

D. receive air from the surface

1
13 tháng 5 2018

Đáp án C

Khi sử dụng thiết bị lặn, thợ lặn:

A. thở ra không khí trong nước

B. nín thở

C. hít thở nhiều lần

D. nhận không khí từ bề mặt

 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 questionsAmbient divers are, unlike divers who go underwater in submersible vehicles of pressure resistant suits, exposed to the pressure and temperature of the surrounding ambient water. Of all types of diving, the oldest and simplest is free diving. Free divers may use no equipment at all, but most use a face mask, foot fins, and a snorkel. Under the surface, free...
Đọc tiếp

 

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

Ambient divers are, unlike divers who go underwater in submersible vehicles of pressure resistant suits, exposed to the pressure and temperature of the surrounding ambient water. Of all types of diving, the oldest and simplest is free diving. Free divers may use no equipment at all, but most use a face mask, foot fins, and a snorkel. Under the surface, free divers must hold their breath. Most free divers can only descend 30 to 40 feet, but some skilled divers can go as deep as 100 feet.

Scuba diving provides greater range than free diving. The word scuba stands for self-contained underwater breathing apparatus. Scuba divers wear metal tanks with compressed air or other breathing gases. When using open-circuit equipment, a scuba diver simply breathes air form the tank through a hose and releases the exhaled air into the water. A closed-circuit breathing device, also called a rebreather, filters out carbon dioxide and other harmful gases and automatically adds oxygen. This enables the diver to breathe the same air over and over. In surface-supplied diving, divers wear helmets and waterproof canvas suits. Today, sophiticated plastic helmets have replaced the heavy copper helmets used in the past.These divers get their air from a hose connected to compressors on a boat. Surface-supplied divers can go deeper than any other type of ambient diver.

According to the passage, the maximum depth for free divers is around ______

 

 

A. 40 feet

B. 100 feet

C. 200 feet

D. 1,000 feet

1
10 tháng 8 2018

Đáp án B

25 tháng 4 2019

Đáp án C.

Key words: who introduced, early form, American music.

Clue: “Many of the slaves who brought musical traditions from Africa”: Rất nhiều những nô lệ mang truyền thống âm nhạc từ Châu Phi tới …” và “American music, in most of its various forms, can be traced back to the music of the earliest African-Americans”: Hầu hết các thể loại âm nhạc ở Mĩ đều có nguồn gốc từ âm nhạc của những người Mĩ gốc Phi xa xưa.

Đáp án đúng là C. Slaves from Africa: Những người nô lệ da đen bị mang từ châu Phi tới Mĩ.

22 tháng 1 2019

Đáp án C.

Key words: who introduced, early form, American music.

Clue: “Many of the slaves who brought musical traditions from Africa”: Rất nhiều những nô lệ mang truyền thống âm nhạc từ Châu Phi tới …” và “American music, in most of its various forms, can be traced back to the music of the earliest African-Americans”: Hầu hết các thể loại âm nhạc ở Mĩ đều có nguồn gốc từ âm nhạc của những người Mĩ gốc Phi xa xưa.

Đáp án đúng là C. Slaves from Africa: Những người nô lệ da đen bị mang từ châu Phi tới Mĩ

5 tháng 6 2019

Đáp án C.

Key words: who introduced, early form, American music.

Clue: “Many of the slaves who brought musical traditions from Africa”: Rất nhiều những nô lệ mang truyền thống âm nhạc từ Châu Phi tới …” và “American music, in most of its various forms, can be traced back to the music of the earliest African-Americans”: Hầu hết các thể loại âm nhạc ở Mĩ đều có nguồn gốc từ âm nhạc của những người Mĩ gốc Phi xa xưa.

Đáp án đúng là C. Slaves from Africa: Những người nô lệ da đen bị mang từ châu Phi tới Mĩ.