The gold mine pool leaching process has strict requirements on the dosage of cyanide solution

TP

Thanh Phương

10 tháng 1 2021

The gold mine pool leaching process has strict requirements on the dosage of cyanide solution; tô much is of a waste and (36) _____ little can't guarantee the leaching effect. When using CNFREE eco-friendly gold leaching reagent, the requirements can be appropriately relaxed (37) _____ terms of dosage, and the same leaching effect of cyanide can be obtained, which saves cost and reduces environmental pollution. Add a small (38) ____ of leaching material to the ore, agitate it uniformly and (39)...

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#Tiếng anh lớp 9

1

KY

Khinh Yên

10 tháng 1 2021

The gold mine pool leaching process has strict requirements on the dosage of cyanide solution; too much is of a waste and (36) too little can't guarantee the leaching effect. When using CNFREE eco-friendly gold leaching reagent, the requirements can be appropriately relaxed (37) in terms of dosage,and the same leaching effect of cyanide can be obtained, which saves cost and reduces environmental pollution. Add a small (38) amount of leaching material to the ore, agitate it uniformly and (39) put it into the pool, then spray the leaching solution containing CNFREE gold environmental leaching solution with the spray system to prevent the solidification of gold ore in the pool, and greatly (40) improve the permeability and leaching rate of the gold mine.

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TP

Thanh Phương

10 tháng 1 2021

cảm ơn bn rất nhiều

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LQ

Lê Quỳnh Anh

23 tháng 11 2019

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 43-50. The attraction of gold is as old as history. Since ancient times, gold has been the object of dreams and obsessions. Western literature is full of characters who kill for gold or hoard it, from King Midas in the ancient Greek myths, to Fagin in Dickens' Oliver Twist. These characters go to evil extremes to get or keep their gold and they get the...

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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 from 43-50.

The attraction of gold is as old as history. Since ancient times, gold has been the object of dreams and obsessions. Western literature is full of characters who kill for gold or hoard it, from King Midas in the ancient Greek myths, to Fagin in Dickens' Oliver Twist. These characters go to evil extremes to get or keep their gold and they get the punishment they deserve. Most people would not be willing to go to such extremes, of course, but they would not question the assumption that gold has lasting value above and beyond any local currency. Societies change over time, customs and currencies evolve, but gold remains. A wedding ring, for example, must be gold, and so should any serious gift of jewelry. In fact, giving and wearing gold is still a mark of prestige in our post-industrial society, though gold is no longer valued as it used to be thousands of years ago.

Why is gold so valuable? True, it is shiny, durable, and rare, but it is far less useful than many other minerals or metals. It is also not like stock in a company, where the value of the stock depends on the performance of the company. Gold, on the contrary, like any currency, is valuable precisely because people believe it is valuable. That is, if people were willing to accept seashells for their labor and could use them to pay for food, fuel, and other commodities, then seashells would become a valuable currency. Thus, the value of gold depends on the collective belief that gold will continue to be valuable. As long as demand for gold remains steady, the price will hold steady; if demand is high, it will continue to increase in value. But if people should someday lose faith in gold, the price of gold could fall sharply.

Another factor that has affected the price of gold has been the increasing difficulty in acquiring it. Today, most of the gold left in the grounds is in microscopic pieces mixed with rock. To get it, miners must dig up tons and tons of rock, and then spray it with chemicals to separate out the gold. For one ounce of gold - a wedding ring, for example - the mine processes about 30 tons of rock. This is already a costly operation. But there are also hidden social and environmental costs. The mining and processing of gold is ruinous to the environment and to the health of people living nearby. Most of these mines are in poor regions where the people have had little voice in whether there should be mines and how the mines should be run. The large multinational mining companies simply bought the land and opened the mines. However, as people and governments begin to realize the extent of the damage caused by the mines, the situation might change. Indeed, if the mining companies ever have to pay the full environmental and social costs of mining gold, the price of gold is likely to climb yet higher.

What does the author believe influences the price of gold on the market?

A. The constant fight for gold

B. Scarcity of areas where gold can be found.

C. The scarcity of gold.

D. The hardship in acquiring gold.

#Mẫu giáo

1

DH

Dương Hoàn Anh

23 tháng 11 2019

Đáp án D

Tác giả tin gì ảnh hưởng đến giá vàng trên thị trường?

A. Cuộc chiến vàng liên tục.

B. Sự khan hiếm của các khu vực có thể tìm thấy vàng.

C. Sự khan hiếm của vàng.

D. Khó khăn trong việc mua vàng

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LQ

Lê Quỳnh Anh

2 tháng 10 2017

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 43-50. The attraction of gold is as old as history. Since ancient times, gold has been the object of dreams and obsessions. Western literature is full of characters who kill for gold or hoard it, from King Midas in the ancient Greek myths, to Fagin in Dickens' Oliver Twist. These characters go to evil extremes to get or keep their gold and they get the...

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 from 43-50.

The attraction of gold is as old as history. Since ancient times, gold has been the object of dreams and obsessions. Western literature is full of characters who kill for gold or hoard it, from King Midas in the ancient Greek myths, to Fagin in Dickens' Oliver Twist. These characters go to evil extremes to get or keep their gold and they get the punishment they deserve. Most people would not be willing to go to such extremes, of course, but they would not question the assumption that gold has lasting value above and beyond any local currency. Societies change over time, customs and currencies evolve, but gold remains. A wedding ring, for example, must be gold, and so should any serious gift of jewelry. In fact, giving and wearing gold is still a mark of prestige in our post-industrial society, though gold is no longer valued as it used to be thousands of years ago.

Why is gold so valuable? True, it is shiny, durable, and rare, but it is far less useful than many other minerals or metals. It is also not like stock in a company, where the value of the stock depends on the performance of the company. Gold, on the contrary, like any currency, is valuable precisely because people believe it is valuable. That is, if people were willing to accept seashells for their labor and could use them to pay for food, fuel, and other commodities, then seashells would become a valuable currency. Thus, the value of gold depends on the collective belief that gold will continue to be valuable. As long as demand for gold remains steady, the price will hold steady; if demand is high, it will continue to increase in value. But if people should someday lose faith in gold, the price of gold could fall sharply.

Another factor that has affected the price of gold has been the increasing difficulty in acquiring it. Today, most of the gold left in the grounds is in microscopic pieces mixed with rock. To get it, miners must dig up tons and tons of rock, and then spray it with chemicals to separate out the gold. For one ounce of gold - a wedding ring, for example - the mine processes about 30 tons of rock. This is already a costly operation. But there are also hidden social and environmental costs. The mining and processing of gold is ruinous to the environment and to the health of people living nearby. Most of these mines are in poor regions where the people have had little voice in whether there should be mines and how the mines should be run. The large multinational mining companies simply bought the land and opened the mines. However, as people and governments begin to realize the extent of the damage caused by the mines, the situation might change. Indeed, if the mining companies ever have to pay the full environmental and social costs of mining gold, the price of gold is likely to climb yet higher.

According to the passage what decides the value of gold?

A. The collective belief that gold will continue to be valuable.

B. The constantly high demand for gold.

C. The usefulness of gold.

D. The industrial demand for gold

#Mẫu giáo

1

DH

Dương Hoàn Anh

2 tháng 10 2017

Đáp án A

Theo đoạn văn, điều gì quyết định giá trị của vàng?

A. Niềm tin tập thể

B. Nhu cầu vàng liên tục cao.

C. Tính hữu ích của vàng.

D. Nhu cầu vàng công nghiệp

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LQ

Lê Quỳnh Anh

4 tháng 1 2019

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 43-50. The attraction of gold is as old as history. Since ancient times, gold has been the object of dreams and obsessions. Western literature is full of characters who kill for gold or hoard it, from King Midas in the ancient Greek myths, to Fagin in Dickens' Oliver Twist. These characters go to evil extremes to get or keep their gold and they get the...

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 from 43-50.

The attraction of gold is as old as history. Since ancient times, gold has been the object of dreams and obsessions. Western literature is full of characters who kill for gold or hoard it, from King Midas in the ancient Greek myths, to Fagin in Dickens' Oliver Twist. These characters go to evil extremes to get or keep their gold and they get the punishment they deserve. Most people would not be willing to go to such extremes, of course, but they would not question the assumption that gold has lasting value above and beyond any local currency. Societies change over time, customs and currencies evolve, but gold remains. A wedding ring, for example, must be gold, and so should any serious gift of jewelry. In fact, giving and wearing gold is still a mark of prestige in our post-industrial society, though gold is no longer valued as it used to be thousands of years ago.

Why is gold so valuable? True, it is shiny, durable, and rare, but it is far less useful than many other minerals or metals. It is also not like stock in a company, where the value of the stock depends on the performance of the company. Gold, on the contrary, like any currency, is valuable precisely because people believe it is valuable. That is, if people were willing to accept seashells for their labor and could use them to pay for food, fuel, and other commodities, then seashells would become a valuable currency. Thus, the value of gold depends on the collective belief that gold will continue to be valuable. As long as demand for gold remains steady, the price will hold steady; if demand is high, it will continue to increase in value. But if people should someday lose faith in gold, the price of gold could fall sharply.

Another factor that has affected the price of gold has been the increasing difficulty in acquiring it. Today, most of the gold left in the grounds is in microscopic pieces mixed with rock. To get it, miners must dig up tons and tons of rock, and then spray it with chemicals to separate out the gold. For one ounce of gold - a wedding ring, for example - the mine processes about 30 tons of rock. This is already a costly operation. But there are also hidden social and environmental costs. The mining and processing of gold is ruinous to the environment and to the health of people living nearby. Most of these mines are in poor regions where the people have had little voice in whether there should be mines and how the mines should be run. The large multinational mining companies simply bought the land and opened the mines. However, as people and governments begin to realize the extent of the damage caused by the mines, the situation might change. Indeed, if the mining companies ever have to pay the full environmental and social costs of mining gold, the price of gold is likely to climb yet higher.

Which of the following is NOT true about gold?

A. It is scarce.

B. It is durable.

C. It is much more useful than any other metals.

D. It is shining.

#Mẫu giáo

1

DH

Dương Hoàn Anh

4 tháng 1 2019

Đáp án C

Điều nào sau đây KHÔNG đúng về vàng?

A. Đó là khan hiếm.

B. Nó bền.

C. Nó hữu ích hơn nhiều so với bất kỳ kim loại nào khác.

D. Nó tỏa sáng

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LQ

Lê Quỳnh Anh

24 tháng 12 2018

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 23 to 27. The story of gold is an adventure involving kings, queens, pirates, explorers, conquerors, and the native peoples they conquered. Throughout history, gold has woven a magic spell over those it touched. Gold is beautiful and rare; a soft shiny metal that can be moulded into many (23) _________. It has been used...

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#Mẫu giáo

1

DH

Dương Hoàn Anh

24 tháng 12 2018

Chọn đáp án C

- yet (conj) + a clause: nhưng

- despite (prep) + N/ V-ing: mặc dù

- because (conj) + a clause: bởi vì

- so (conj) + a clause: vì vậy, cho nên

“Gold has a warm, sunny colour and because it does not react with air, water, and most chemicals, its shine never fades” (Vàng có màu ánh kim và vì nó không phản ứng với không khí, nước và hầu hết các hóa chất nên độ sáng bóng của nó không bao giờ phai.)

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LQ

Lê Quỳnh Anh

13 tháng 2 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 23 to 27. The story of gold is an adventure involving kings, queens, pirates, explorers, conquerors, and the native peoples they conquered. Throughout history, gold has woven a magic spell over those it touched. Gold is beautiful and rare; a soft shiny metal that can be moulded into many (23) _________. It has been used...

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#Mẫu giáo

1

DH

Dương Hoàn Anh

13 tháng 2 2019

Chọn đáp án C

- estate (n): bất động sản

- stage (n): giai đoạn

- State (n): trạng thái, tình trạng

- position (n): vị trí

+ natural State: trạng thái tự nhiên

“In its natural state, gold is soft and easily shaped. When heated to 1,062 Celsius it melts and can be poured into moulds to form coins, gold bars, and other objects” (Trong trạng thái tự nhiên, vàng mềm và dễ tạo hình. Khi được đun nóng đến 1062 độ C thì nó tan chảy và có thể đổ vào khuôn để đúc tiền xu, thỏi vàng và các đồ vật khác.)

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LQ

Lê Quỳnh Anh

7 tháng 4 2017

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 23 to 27. The story of gold is an adventure involving kings, queens, pirates, explorers, conquerors, and the native peoples they conquered. Throughout history, gold has woven a magic spell over those it touched. Gold is beautiful and rare; a soft shiny metal that can be moulded into many (23) _________. It has been used...

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#Mẫu giáo

1

DH

Dương Hoàn Anh

7 tháng 4 2017

Chọn đáp án C

- format (n): định dạng, khổ

- outline (n): đề cương, đường nét

- shape (n): hình, hình dạng

- line (n): đường kẻ

+ mould sth into shapes: nặn, đúc cái gì thành nhiều hình dạng

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LQ

Lê Quỳnh Anh

13 tháng 7 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 23 to 27. The story of gold is an adventure involving kings, queens, pirates, explorers, conquerors, and the native peoples they conquered. Throughout history, gold has woven a magic spell over those it touched. Gold is beautiful and rare; a soft shiny metal that can be moulded into many (23) _________. It has been used...

Đọc tiếp

#Mẫu giáo

1

DH

Dương Hoàn Anh

13 tháng 7 2019

Chọn đáp án B

- in the world: trên thế giới

“Gold and the people who love it have helped shape the world we live in today.” (Vàng và những người yêu thích vàng đã giúp hình thành nên thế giới mà chúng ta đang sống ngày hôm nay.)

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LQ

Lê Quỳnh Anh

2 tháng 1 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 23 to 27. The story of gold is an adventure involving kings, queens, pirates, explorers, conquerors, and the native peoples they conquered. Throughout history, gold has woven a magic spell over those it touched. Gold is beautiful and rare; a soft shiny metal that can be moulded into many (23) _________. It has been used...

Đọc tiếp

#Mẫu giáo

1

DH

Dương Hoàn Anh

2 tháng 1 2019

Chọn đáp án D

- Whoever (pronoun): bất cứ ai, bất cứ người nào

- However (adv): tuy nhiên

- Forever (adv): mãi mãi

- Wherever (adv, conj): bất cứ nơi nào, ở nơi nào

“Wherever the precious metal was discovered, prospectors rushed to mine it, starting new cities and countries as they went.” (Bất cứ nơi nào mà kim loại quý được phát hiện, những người thăm dò vội vã đến để khai thác, thành lập các thành phố và quốc gia mới khi họ đến.)

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LQ

Lê Quỳnh Anh

16 tháng 10 2017

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 43-50. The attraction of gold is as old as history. Since ancient times, gold has been the object of dreams and obsessions. Western literature is full of characters who kill for gold or hoard it, from King Midas in the ancient Greek myths, to Fagin in Dickens' Oliver Twist. These characters go to evil extremes to get or keep their gold and they get the...

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 from 43-50.

The attraction of gold is as old as history. Since ancient times, gold has been the object of dreams and obsessions. Western literature is full of characters who kill for gold or hoard it, from King Midas in the ancient Greek myths, to Fagin in Dickens' Oliver Twist. These characters go to evil extremes to get or keep their gold and they get the punishment they deserve. Most people would not be willing to go to such extremes, of course, but they would not question the assumption that gold has lasting value above and beyond any local currency. Societies change over time, customs and currencies evolve, but gold remains. A wedding ring, for example, must be gold, and so should any serious gift of jewelry. In fact, giving and wearing gold is still a mark of prestige in our post-industrial society, though gold is no longer valued as it used to be thousands of years ago.

Why is gold so valuable? True, it is shiny, durable, and rare, but it is far less useful than many other minerals or metals. It is also not like stock in a company, where the value of the stock depends on the performance of the company. Gold, on the contrary, like any currency, is valuable precisely because people believe it is valuable. That is, if people were willing to accept seashells for their labor and could use them to pay for food, fuel, and other commodities, then seashells would become a valuable currency. Thus, the value of gold depends on the collective belief that gold will continue to be valuable. As long as demand for gold remains steady, the price will hold steady; if demand is high, it will continue to increase in value. But if people should someday lose faith in gold, the price of gold could fall sharply.

Another factor that has affected the price of gold has been the increasing difficulty in acquiring it. Today, most of the gold left in the grounds is in microscopic pieces mixed with rock. To get it, miners must dig up tons and tons of rock, and then spray it with chemicals to separate out the gold. For one ounce of gold - a wedding ring, for example - the mine processes about 30 tons of rock. This is already a costly operation. But there are also hidden social and environmental costs. The mining and processing of gold is ruinous to the environment and to the health of people living nearby. Most of these mines are in poor regions where the people have had little voice in whether there should be mines and how the mines should be run. The large multinational mining companies simply bought the land and opened the mines. However, as people and governments begin to realize the extent of the damage caused by the mines, the situation might change. Indeed, if the mining companies ever have to pay the full environmental and social costs of mining gold, the price of gold is likely to climb yet higher.

According to the passage, what is people’s behavior towards gold?

A. Many of them are mentioned in Western literature for their gold

B. They have dreamt of and wanted to have it.

C. They all have spent their life searching for it.

D. Many of them are punished for not having it

#Mẫu giáo

1

DH

Dương Hoàn Anh

16 tháng 10 2017

Đáp án B

Theo đoạn văn, người dân đã làm gì với vàng?

A. Nhiều người trong số họ được đề cập trong văn học phương Tây vì số vàng của họ.

B. Họ đã mơ ước và muốn có nó.

C. Tất cả họ đã dành cả đời để tìm kiếm nó.

D. Nhiều người trong số họ bị trừng phạt vì không có nó

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