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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.     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...
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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.

    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
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

5 tháng 10 2017

Đáp án: C

Giải thích: Dẫn chứng nằm ở 2 dòng cuối của đoạn 1.

22 tháng 4 2019

Đáp án: D

6 tháng 12 2018

Đáp án: B

Giải thích: Muốn làm được các câu hỏi dạng này phải đọc câu đằng trước các em nhé.

26 tháng 9 2019

Đáp án: D

Giải thích: Mấu chốt của câu này là các em phải đọc hết đoạn cuối để suy ra cái mà tác giả muốn hướng tới: Con người phải đối mặt với sự lựa chọn khó khăn: sự sống của mình hay cứu lấy động vật.

. 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 volume of traffic in many cities in the world today continues to expand. This caused many problems, including serious air pollution, lengthy delays, and the greater risk of accidents. Clearly, something must be done, but it is difficult to persuade people to change habits and leaves their cars at...
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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.

                                                    

The volume of traffic in many cities in the world today continues to expand. This caused many problems, including serious air pollution, lengthy delays, and the greater risk of accidents. Clearly, something must be done, but it is difficult to persuade people to change habits and leaves their cars at home.

One possible approach is to make it more expensive for people to use their cars by increasing charges for parking and bringing in tougher fines for anyone who breaks the law. In addition, drivers could be required to pay for using particular routes at differ times of the day. This system, known as road pricing has already been introduced in a number of cities, using a special electronic card fixed to the windscreen of the car. Of course, the most important thing is to provide good public transport. However, to get people to give up the comfort of their cars, public transport must be felt to be reliable, convenient and comfortable, with fares kept at an acceptable level.

Glossary:          persuade (v.) (~ sb to do sth): thuyết phục (ai làm gì)

tough (adj.) = difficult; strict: khó; nghiêm khăc

 a tough fine: phạt tiền thật nặng reliable (adj.): đáng tin cậy

38. The word expand in paragraph 1 is closest in meaning to ____________________.

A. decrease                    B. increase                              C. reduce                    D. develop

39. Which of the following is NOT mentioned as a problem caused by more traffic?

A. serious air pollution                                          B. greater risks of accidents

C. people’s habits                                                  D. very long delays

40. The most important thing to encourage people to use public transport is _________________

A. high parking fees                                                                   B. good public transport

C. road using fees                                                                       D. high charges for public transport

41. The verb give up is closest in meaning to ______________________.

A. continue using               B. encourage                                   C. get bored with               D. stop using

42. We can learn from the text that  _______________.

A. it is easy for people to change their habits

B. many people will not drive expensive cars                           

C. more people will use public transport if it is cheap, reliable and comfortable

D. pollution and lengthy delays cause people to leave their cars at home

1
31 tháng 3 2022

38. B
39. C
40. B
41. D
42. D

28 tháng 4 2018

Đáp án: A

Giải thích: Inconsequential = unimportant (không quan trọng)

3 tháng 11 2018

Đáp án: D

Giải thích: Perish = disappear: biến mất, tuyệt chủng

5 tháng 6 2019

Đáp án A.

Key words: they, last paragraph, refers.

Clue:Many musicians today credit earlier musicians such as Scott Joplin or Bessie Smith with inspiring their music. It’s a shame that they can’t also name the earliest African-Americans who really began the traditions that led to the American music of today”: Nhiều nhạc sĩ ngày nay ghi nhận những cái tên đi trước như Scott Joplin hay Bessie Smith vì những nghệ sĩ này đã truyền cảm hứng sáng tác cho họ. Đáng tiếc là họ không thể biết được tên tuổi của những người Mĩ gốc Phi xa xưa – những người đã thật sự tạo ra những truyền thống bắt nguồn cho nền âm nhạc nước Mĩ ngày nay.

Đáp án đúng là A. today’s musicians. “Họ” ở đây là những nhạc sĩ ngày nay.

18 tháng 9 2018

Đáp án A.

Key words: they, last paragraph, refers.

Clue:Many musicians today credit earlier musicians such as Scott Joplin or Bessie Smith with inspiring their music. It’s a shame that they can’t also name the earliest African-Americans who really began the traditions that led to the American music of today”: Nhiều nhạc sĩ ngày nay ghi nhận những cái tên đi trước như Scott Joplin hay Bessie Smith vì những nghệ sĩ này đã truyền cảm hứng sáng tác cho họ. Đáng tiếc là họ không thể biết được tên tuổi của những người Mĩ gốc Phi xa xưa – những người đã thật sự tạo ra những truyền thống bắt nguồn cho nền âm nhạc nước Mĩ ngày nay.

Đáp án đúng là A. today’s musicians. “Họ” ở đây là những nhạc sĩ ngày nay.

4 tháng 4 2017

Đáp án A.

Key words: they, last paragraph, refers.

Clue: “Many musicians today credit earlier musicians such as Scott Joplin or Bessie Smith with inspiring their music. It’s a shame that they can’t also name the earliest African-Americans who really began the traditions that led to the American music of today”: Nhiều nhạc sĩ ngày nay ghi nhận những cái tên đi trước như Scott Joplin hay Bessie Smith vì những nghệ sĩ này đã truyền cảm hứng sáng tác cho họ. Đáng tiếc là họ không thể biết được tên tuổi của những người Mĩ gốc Phi xa xưa – những người đã thật sự tạo ra những truyền thống bắt nguồn cho nền âm nhạc nước Mĩ ngày nay.

Đáp án đúng là A. today’s musicians. “Họ” ở đây là những nhạc sĩ ngày nay