2.Read and answer the questions Bau Truc pottery items are made from clay from the Quao River mixed with sand. Clay is collected from the river only once a year, each lasting for half a month. Clay is...

1

TH

Thu Hồng

23 tháng 10 2021

2.Read and answer the questions
Bau Truc pottery items are made from clay from the Quao River mixed with sand. Clay is collected from the river only once a year, each lasting for half a month. Clay is taken more or less dependibg on the ability of each person. In the clay collecting season, local people try to take as much clay as they can to store, for use in an entire year
Currently, people in Bau Truc pottery village still make pottery items in the traditional way. They do not use turntables but the craftsmen have to turn around the products. The potters shape their products by skillful hands and feet around a pole-round pillar, rather than on the wheel. From this step, silky clay block initially gradually forms a smooth rounded hollow blocks, then the formation of flower vases, or water pots
Bau Truc's craftsmen use wet cloths to make the products surface smooth. These items are decorated with seashells, snails or hand-made paintings featuring the daily life of Bau Truc's people

Đồ gốm Bàu Trúc được làm từ đất sét của sông Quao trộn với cát. Đất sét chỉ được lấy từ sông mỗi năm một lần, mỗi lần kéo dài nửa tháng. Đất sét được lấy nhiều hay ít tùy thuộc vào khả năng của mỗi người. Vào mùa thu gom đất sét, người dân địa phương cố gắng lấy càng nhiều đất sét càng tốt để tích trữ, để sử dụng trong cả năm
Hiện nay, người dân làng gốm Bàu Trúc vẫn làm đồ gốm theo phương thức truyền thống. Họ không sử dụng bàn xoay mà người thợ phải quay sản phẩm. Những người thợ gốm tạo hình sản phẩm của họ bằng bàn tay và đôi chân khéo léo xung quanh một cây cột tròn chứ không phải trên bánh xe. Từ bước này, khối đất sét mịn ban đầu dần dần tạo thành khối rỗng tròn nhẵn, sau đó hình thành lọ hoa, chậu nước.
Những người thợ của Bàu Trúc sử dụng khăn ướt để làm nhẵn bề mặt sản phẩm. Những vật dụng này được trang trí bằng vỏ sò, ốc hoặc những bức tranh làm bằng tay về cuộc sống hàng ngày của người dân Bàu Trúc

a. What are Bau Truc pottery items made from?
=> They are made from clay.
b. How often is clay collected from the river?
=> It is collected from the river only once a year, each lasting for half a month.
c. What do people in Bau Truc pottery village still make?
=> They still make pottery items in the traditional way.
d. What do Bau Truc's craftsmen use to make the product surface smooth?
=> They use their skillful hands and feet around a pole-round pillar.

II Read the passages and answer the questions Bau Truc pottery items are made from clay from the Quao River mixed with sand. Clay is collected from the river only once a year, each lasting for half a month, clay is taken more or less depending on the ability of each person. In the clay collect seaseon, local people try to take as much clay as they can to store, for use in the entire year. Currently, people in Bau Truc pottery village still make pottery items in the traditional way. They do not...

TH

Thu Hoang Anh

11 tháng 10 2021

1

DT

Đỗ Thanh Hải

CTVVIP

11 tháng 10 2021

1 It is collected from the Quao river once a year

2 Yes, they do

3 They are decorated with seashells, snails or hand-made paintings ....

VII.Read the passage, and decide whether the following statements are true (T) or false (F). Bau Truc pottery items are made from clay from the Quao River mixed with sand. Clay is collected from the river only once a year, each lasting for half a month. Clay is taken more or less depending on the ability of each person. In the clay collecting season, local people try to take as much clay as they can to store, for use in the entire year. Currently, people in Bau Truc pottery village still...

NN

Nikki Nii

10 tháng 7 2021

Read the passage and decide whether the following statements are true (T) , or false (F)Bau Truc pottery iems are made from clay from the Quao River mied with sand. Clay is collected from the river only once a year,each lasting for half a month. Clay is taken more or less depending on the ability of each person. In the clay collecting season,local people try to take as much clay as they can to store, for use in an entire year.Currently,people in Bau Truc pottery village still make pottery items...

#Tiếng anh lớp 8

1

DT

Đỗ Thanh Hải

CTVVIP

10 tháng 7 2021

Tham khảo: Read the passage and decide whether the following statements are true (T) , or false (F) Bau Truc pottery iems are made from clay from the Quao River mied with sand. Clay is collected from the river... - Hoc24

Bau Truc pottery iems are made from clay from the Quao River mied with sand. Clay is collected from the river only once a year,each lasting for half a month. Clay is taken more or less depending on the ability of each person. In the clay collecting season,local people try to take as much clay as they can to store, for use in an entire year.

Currently,people in Bau Truc pottery village still make pottery items in the traditional way. They do not use the wheel but the craftsmen have to turn around the products.The potters shape their products by their skillful hands and feet around apole-round pillar, rather than on one wheel. From this step, silky clay block initially gradually forms a smooth rounded hollow block, then the formation of flower vases, or water pots.

Bau truc's craftsmen use wet cloths to make the products surface smooth. These items are decorated ith seashells, snails or hand-made paintings featuring the daily life of Bau Truc's people

1. Cay can be collected from the Quao River all the year round. F

2. Bau Truc pottery is famous because people only use fine clay to make their products. T

3. People still make the pottery in the traditional way. T

4. Craftsmen shape thepottery items only with their hands and feet. T

5. The pots nowadays are shaped on the pottery's wheel. F

6. Craftsmen use simple ways to make the products surface smooth. T

7. The craftsmen's skills can make the blocks of clay become lively and useful. T

8. The desgins of Bau Truc pottery reflect the life of local people. T

Đúng(4)

MV

MiMi VN

1 tháng 5 2021

Read the passage and decide whether the following statements are true (T) , or false (F)

Bau Truc pottery iems are made from clay from the Quao River mied with sand. Clay is collected from the river only once a year,each lasting for half a month. Clay is taken more or less depending on the ability of each person. In the clay collecting season,local people try to take as much clay as they can to store, for use in an entire year.

Currently,people in Bau Truc pottery village still make pottery items in the traditional way. They do not use the wheel but the craftsmen have to turn around the products.The potters shape their products by their skillful hands and feet around apole-round pillar, rather than on one wheel. From this step, silky clay block initially gradually forms a smooth rounded hollow block, then the formation of flower vases, or water pots.

Bau truc's craftsmen use wet cloths to make the products surface smooth. These items are decorated ith seashells, snails or hand-made paintings featuring the daily life of Bau Truc's people

1. Cay can be collected from the Quao River all the year round.

2. Bau Truc pottery is famous because people only use fine clay to make their products.

3. People still make the pottery in the traditional way.

4. Craftsmen shape thepottery items only with their hands and feet.

5. The pots nowadays are shaped on the pottery's wheel.

6. Craftsmen use simple ways to make the products surface smooth.

7. The craftsmen's skills can make the blocks of clay become lively and useful.

8. The desgins of Bau Truc pottery reflect the life of local people.

Extra readings

Complete the article. Use the pharases below

A. burning fossil fuels for energy

B. leading to climate change

C. investing in renewable energy

D. beacaus it can't escape, it heats the planet

E. heating our homes, cooking our meals, etc

THE CHANGING CLIMATE

Problem

We use energy for almost everything we do: for (1)______. This use of energy is (2)_____ - the world is heating up. When (3)______, carbon dioxide is released. Carbon dioxide traps the sun's heat in the atmosphere and (4)______ Over the past thirty year, there has been a growing number of extreme weather events, such as floods. droughts and storms.

Solution

We should protect our planet, by (5)_______. We should use sources of energy more wisely, for our future, and the future of the planet

Read the passage and decide whether the following statements are true (T) , or false (F) Bau Truc pottery iems are made from clay from the Quao River mied with sand. Clay is collected from the river only once a year,each lasting for half a month. Clay is taken more or less depending on the ability of each person. In the clay collecting season,local people try to take as much clay as they can to store, for use in an entire year. Currently,people in Bau Truc pottery village still make pottery...

2

DT

Đỗ Thanh Hải

CTVVIP

1 tháng 5 2021

Bau Truc pottery iems are made from clay from the Quao River mied with sand. Clay is collected from the river only once a year,each lasting for half a month. Clay is taken more or less depending on the ability of each person. In the clay collecting season,local people try to take as much clay as they can to store, for use in an entire year.

Currently,people in Bau Truc pottery village still make pottery items in the traditional way. They do not use the wheel but the craftsmen have to turn around the products.The potters shape their products by their skillful hands and feet around apole-round pillar, rather than on one wheel. From this step, silky clay block initially gradually forms a smooth rounded hollow block, then the formation of flower vases, or water pots.

Bau truc's craftsmen use wet cloths to make the products surface smooth. These items are decorated ith seashells, snails or hand-made paintings featuring the daily life of Bau Truc's people

1. Cay can be collected from the Quao River all the year round. F

2. Bau Truc pottery is famous because people only use fine clay to make their products. T

3. People still make the pottery in the traditional way. T

4. Craftsmen shape thepottery items only with their hands and feet. T

5. The pots nowadays are shaped on the pottery's wheel. F

6. Craftsmen use simple ways to make the products surface smooth. T

7. The craftsmen's skills can make the blocks of clay become lively and useful. T

8. The desgins of Bau Truc pottery reflect the life of local people. T

Đúng(1)

DT

Đỗ Thanh Hải

CTVVIP

1 tháng 5 2021

Extra readings

Complete the article. Use the pharases below

A. burning fossil fuels for energy

B. leading to climate change

C. investing in renewable energy

D. beacaus it can't escape, it heats the planet

E. heating our homes, cooking our meals, etc

THE CHANGING CLIMATE

Problem

We use energy for almost everything we do: for (1)___heating our homes, cooking our meals, etc___. This use of energy is (2)__ leading to climate change___ - the world is heating up. When (3)__burning fossil fuels for energy____, carbon dioxide is released. Carbon dioxide traps the sun's heat in the atmosphere and (4)___beacaus it can't escape, it heats the planet___ Over the past thirty year, there has been a growing number of extreme weather events, such as floods. droughts and storms.

Solution

We should protect our planet, by (5)__investing in renewable energy_____. We should use sources of energy more wisely, for our future, and the future of the planet

Đúng(1)

HN

Hoàng Nguyễn Tuyết Nga

29 tháng 8 2020

1

DT

Đào Thu Hiền

31 tháng 5 2021

1. F

2. F

3. T

4. F

5. T

6. T

7. T

8. T

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. The mineral particles found in soil range in size from microscopic clay particles to large boulders. The most abundant particles - sand, silt, and clay - are the focus of examination in studies of soil texture. Texture is the term used to describe the line composite sizes of particles in a soil sample, typically several representative handfuls. To measure...

LQ

Lê Quỳnh Anh

10 tháng 6 2018

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.

The mineral particles found in soil range in size from microscopic clay particles to large boulders. The most abundant particles - sand, silt, and clay - are the focus of examination in studies of soil texture. Texture is the term used to describe the line composite sizes of particles in a soil sample, typically several representative handfuls. To measure soil texture, the sand, silt, and clay particles are sorted out by size and weight. The weights of each size are then expressed as a percentage of the sample weight.

In the field, soil texture can be estimated by extracting a handful of sod and squeezing the damp soil into three basic shapes; cast, a lump formed by squeezing a sample in a clenched fist; thread, a pencil shape formed by rolling soil between the palms; and ribbon, a flatfish shape formed by squeezing a small sample between the thumb and index finger. The behavioral characteristics of the soil when molded into each of these shapes, if they can be formed at all, provides the basis for a general textural classification. The behavior of the soil in the hand test is determined by the amount of clay in the sample. Clay particles are highly cohesive, and when dampened, behave as a plastic. Therefore the higher the clay content in a sample, the more refined and durable the shapes into which it can be molded.

Another method of determining soil texture involves the use of devices called sediment sieves, screens built with a specified mesh size. When the soil is filtered through a group of sieves, each with a different mesh size, the particles become grouped in corresponding size categories. Each category can be weighed to make a textural determination. Although sieves work well for silt, sand, and larger particles, they are not appropriate for clay particles. Clay is far too small to sieve accurately; therefore, in soils with a high proportion of clay, the fine particles are measured on the basis of their settling velocity when suspended in water. Since clays settle so slowly, they are easily segregated from sand and silt. The water can be drawn off and evaporated, leaving a residue of clay, which can be weighed.

It can be inferred from the passage that a soil sample with little or no clay in it ________.

A. may not hold its shape when molded

B. does not have a classifiable texture

C. is not very heavy

D. does not have a durable shap

1

DH

Dương Hoàn Anh

10 tháng 6 2018

Đáp án A

Có thể suy ra từ đoạn văn rằng một mẫu đất có ít hoặc không có chất sét thì ______.

A. không thể giữ nguyên hình dạng khi được nặn

B. không có kết cấu định dạng được

C. không quá nặng

D. không có hình dạng bền nhất định

“The behavior of the soil in the hand test is determined by the amount of clay in the sample. Clay particles are highly cohesive, and when dampened, behave as a plastic. Therefore the higher the clay content in a sample, the more refined and durable the shapes into which it can be molded.”

(Trạng thái của đất qua thử nghiệm bằng tay được xác định qua lượng chất sét có trong mẫu. Các hạt đất sét có tính kết dính rất cao, và khi được làm ẩm thì có đặc tính như chất dẻo. Vì vậy, lượng đất sét có trong mẫu càng cao thì ta có thể nặn nó thành những hình dạng trau chuốt và giữ được lâu hơn.)

Từ đây ta có thể suy ra mẫu đất ít hoặc không có chất sét sẽ không giữ được hình dạng khi được vắt, nặn. Không thể kết luận liệu nó nhẹ hay nặng, hình dạng bền hay không và kết cấu phân loại được hay không.

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. The mineral particles found in soil range in size from microscopic clay particles to large boulders. The most abundant particles - sand, silt, and clay - are the focus of examination in studies of soil texture. Texture is the term used to describe the line composite sizes of particles in a soil sample, typically several representative handfuls. To measure...

LQ

Lê Quỳnh Anh

1 tháng 3 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.

The mineral particles found in soil range in size from microscopic clay particles to large boulders. The most abundant particles - sand, silt, and clay - are the focus of examination in studies of soil texture. Texture is the term used to describe the line composite sizes of particles in a soil sample, typically several representative handfuls. To measure soil texture, the sand, silt, and clay particles are sorted out by size and weight. The weights of each size are then expressed as a percentage of the sample weight.

In the field, soil texture can be estimated by extracting a handful of sod and squeezing the damp soil into three basic shapes; cast, a lump formed by squeezing a sample in a clenched fist; thread, a pencil shape formed by rolling soil between the palms; and ribbon, a flatfish shape formed by squeezing a small sample between the thumb and index finger. The behavioral characteristics of the soil when molded into each of these shapes, if they can be formed at all, provides the basis for a general textural classification. The behavior of the soil in the hand test is determined by the amount of clay in the sample. Clay particles are highly cohesive, and when dampened, behave as a plastic. Therefore the higher the clay content in a sample, the more refined and durable the shapes into which it can be molded.

Another method of determining soil texture involves the use of devices called sediment sieves, screens built with a specified mesh size. When the soil is filtered through a group of sieves, each with a different mesh size, the particles become grouped in corresponding size categories. Each category can be weighed to make a textural determination. Although sieves work well for silt, sand, and larger particles, they are not appropriate for clay particles. Clay is far too small to sieve accurately; therefore, in soils with a high proportion of clay, the fine particles are measured on the basis of their settling velocity when suspended in water. Since clays settle so slowly, they are easily segregated from sand and silt. The water can be drawn off and evaporated, leaving a residue of clay, which can be weighed.

The word “fine” in the passage is closest in meaning to _____.

A. various

B. tiny

C. excellent

D. many

1

DH

Dương Hoàn Anh

1 tháng 3 2017

Đáp án B

Từ “fine” trong bài gần nghĩa nhất với _____.

A. phong phú

B. tí hon, cực tiểu

C. xuất sắc

D. rất nhiều

Ta thấy tính từ “fine” được dùng trong bài mang nghĩa là in small grains, pieces, or drops (ở dạng những hạt, viên hay giọt nhỏ bé).

Fine (adj) ≈ tiny (adj): nhỏ xíu

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. The mineral particles found in soil range in size from microscopic clay particles to large boulders. The most abundant particles - sand, silt, and clay - are the focus of examination in studies of soil texture. Texture is the term used to describe the line composite sizes of particles in a soil sample, typically several representative handfuls. To measure...

LQ

Lê Quỳnh Anh

12 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.

The mineral particles found in soil range in size from microscopic clay particles to large boulders. The most abundant particles - sand, silt, and clay - are the focus of examination in studies of soil texture. Texture is the term used to describe the line composite sizes of particles in a soil sample, typically several representative handfuls. To measure soil texture, the sand, silt, and clay particles are sorted out by size and weight. The weights of each size are then expressed as a percentage of the sample weight.

In the field, soil texture can be estimated by extracting a handful of sod and squeezing the damp soil into three basic shapes; cast, a lump formed by squeezing a sample in a clenched fist; thread, a pencil shape formed by rolling soil between the palms; and ribbon, a flatfish shape formed by squeezing a small sample between the thumb and index finger. The behavioral characteristics of the soil when molded into each of these shapes, if they can be formed at all, provides the basis for a general textural classification. The behavior of the soil in the hand test is determined by the amount of clay in the sample. Clay particles are highly cohesive, and when dampened, behave as a plastic. Therefore the higher the clay content in a sample, the more refined and durable the shapes into which it can be molded.

Another method of determining soil texture involves the use of devices called sediment sieves, screens built with a specified mesh size. When the soil is filtered through a group of sieves, each with a different mesh size, the particles become grouped in corresponding size categories. Each category can be weighed to make a textural determination. Although sieves work well for silt, sand, and larger particles, they are not appropriate for clay particles. Clay is far too small to sieve accurately; therefore, in soils with a high proportion of clay, the fine particles are measured on the basis of their settling velocity when suspended in water. Since clays settle so slowly, they are easily segregated from sand and silt. The water can be drawn off and evaporated, leaving a residue of clay, which can be weighed.

The word “dampened” in the passage is closest in meaning to _____.

A. examined

B. stretched

C. moistened

D. damaged

1

DH

Dương Hoàn Anh

12 tháng 1 2019

Đáp án C

Từ “dampened” trong bài gần nghĩa nhất với _______.

A. kiểm tra

B. giãn cách

C. làm ẩm

D. huỷ hoại

(to) dampen = (to) moisten: làm ẩm, ướt

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. The mineral particles found in soil range in size from microscopic clay particles to large boulders. The most abundant particles - sand, silt, and clay - are the focus of examination in studies of soil texture. Texture is the term used to describe the line composite sizes of particles in a soil sample, typically several representative handfuls. To measure...

LQ

Lê Quỳnh Anh

22 tháng 8 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.

The mineral particles found in soil range in size from microscopic clay particles to large boulders. The most abundant particles - sand, silt, and clay - are the focus of examination in studies of soil texture. Texture is the term used to describe the line composite sizes of particles in a soil sample, typically several representative handfuls. To measure soil texture, the sand, silt, and clay particles are sorted out by size and weight. The weights of each size are then expressed as a percentage of the sample weight.

In the field, soil texture can be estimated by extracting a handful of sod and squeezing the damp soil into three basic shapes; cast, a lump formed by squeezing a sample in a clenched fist; thread, a pencil shape formed by rolling soil between the palms; and ribbon, a flatfish shape formed by squeezing a small sample between the thumb and index finger. The behavioral characteristics of the soil when molded into each of these shapes, if they can be formed at all, provides the basis for a general textural classification. The behavior of the soil in the hand test is determined by the amount of clay in the sample. Clay particles are highly cohesive, and when dampened, behave as a plastic. Therefore the higher the clay content in a sample, the more refined and durable the shapes into which it can be molded.

Another method of determining soil texture involves the use of devices called sediment sieves, screens built with a specified mesh size. When the soil is filtered through a group of sieves, each with a different mesh size, the particles become grouped in corresponding size categories. Each category can be weighed to make a textural determination. Although sieves work well for silt, sand, and larger particles, they are not appropriate for clay particles. Clay is far too small to sieve accurately; therefore, in soils with a high proportion of clay, the fine particles are measured on the basis of their settling velocity when suspended in water. Since clays settle so slowly, they are easily segregated from sand and silt. The water can be drawn off and evaporated, leaving a residue of clay, which can be weighed.

The author mentions “several representative handfuls” in the passage in order to show ______.

A. how small soil particles are

B. the requirements for an adequate soil farm

C. the process by which soil is weighed

D. the range of soil samples

1

DH

Dương Hoàn Anh

22 tháng 8 2017

Đáp án D

Tác giả đề cập “several representative handfuls” trong bài nhằm trình bày _______.

A. phần tử đất nhỏ ra sao

B. yêu cầu đối với một mảnh đất đầy đủ

C. quá trình đo trọng lượng đất

D. các loại mẫu đất

Ta có thể tìm thấy câu trả lời qua câu sau trong bài: “Texture is the term used to describe the line composite sizes of particles in a soil sample, typically several representative handfuls.”

(Kết cấu là thuật ngữ dùng để mô tả các quy mô hỗn hợp theo hàng của các hạt trong một mẫu đất, điển hình là một vài nắm đất đại diện làm mẫu.) Như vậy cụm từ “several representative handfuls” được tác giả đề cập trong bài để chỉ các loại mẫu đất (the range of soil samples)

Lưu ý: range = a variety of things of a particular type (nhóm hay một loạt các vật cùng loại)

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. The mineral particles found in soil range in size from microscopic clay particles to large boulders. The most abundant particles - sand, silt, and clay - are the focus of examination in studies of soil texture. Texture is the term used to describe the line composite sizes of particles in a soil sample, typically several representative handfuls. To measure...

LQ

Lê Quỳnh Anh

29 tháng 3 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.

The mineral particles found in soil range in size from microscopic clay particles to large boulders. The most abundant particles - sand, silt, and clay - are the focus of examination in studies of soil texture. Texture is the term used to describe the line composite sizes of particles in a soil sample, typically several representative handfuls. To measure soil texture, the sand, silt, and clay particles are sorted out by size and weight. The weights of each size are then expressed as a percentage of the sample weight.

In the field, soil texture can be estimated by extracting a handful of sod and squeezing the damp soil into three basic shapes; cast, a lump formed by squeezing a sample in a clenched fist; thread, a pencil shape formed by rolling soil between the palms; and ribbon, a flatfish shape formed by squeezing a small sample between the thumb and index finger. The behavioral characteristics of the soil when molded into each of these shapes, if they can be formed at all, provides the basis for a general textural classification. The behavior of the soil in the hand test is determined by the amount of clay in the sample. Clay particles are highly cohesive, and when dampened, behave as a plastic. Therefore the higher the clay content in a sample, the more refined and durable the shapes into which it can be molded.

Another method of determining soil texture involves the use of devices called sediment sieves, screens built with a specified mesh size. When the soil is filtered through a group of sieves, each with a different mesh size, the particles become grouped in corresponding size categories. Each category can be weighed to make a textural determination. Although sieves work well for silt, sand, and larger particles, they are not appropriate for clay particles. Clay is far too small to sieve accurately; therefore, in soils with a high proportion of clay, the fine particles are measured on the basis of their settling velocity when suspended in water. Since clays settle so slowly, they are easily segregated from sand and silt. The water can be drawn off and evaporated, leaving a residue of clay, which can be weighed.

The word “they” in the passage refers to _____.

A. categories

B. sieves

C. clay particles

D. larger particles

1

DH

Dương Hoàn Anh

29 tháng 3 2017

Đáp án C

Từ “they” trong đoạn chỉ _____.

A. các hạng mục, phân loại

B. các màng lọc

C. phân tử đất sét

D. các phân tử lớn hơn

“Since clays settle so slowly, they are easily segregated from sand and silt.”

(Do đất sét lắng xuống rất chậm, chúng có thể được tách biệt dễ dàng khỏi cát và bùn.)

Dễ thấy they là thay thế cho clays (clays particles