Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks.
The philosopher Aristotle said, “In poverty and other misfortunes of life, true friends are a sure refuge. They keep the young out of mischief; they comfort and aid the old in their weakness, and they incite those in the prime of life to noble deeds. “Growing up”, my mother always used to tell me “your friends are a reflection of you”. I did not quite understand this (20) ______ I started meeting individuals who kept, not so healthy friends in their lives and suddenly, as a young teenager, I learned to understand that the friends I keep in my life (21) ______ who I am and desire to be as a person and therefore I have learned to choose my friends wisely over the years. I do not care about the superficial (22) ______ such as looks, money, success or status but rather I emulate those (23) ______ bring laughter, joy, honesty and who can be there for me and also give me a firm kick in the butt when I need it. I always find it intriguing to meet friends of people I know because I can really get a sense of that person by the company they choose to (24) ________ in their life.
(Source: https://www.psychologytoday.com)
(23)
A.who
B.whom
C.which
D.where

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks.
The philosopher Aristotle said, “In poverty and other misfortunes of life, true friends are a sure refuge. They keep the young out of mischief; they comfort and aid the old in their weakness, and they incite those in the prime of life to noble deeds. “Growing up”, my mother always used to tell me “your friends are a reflection of you”. I did not quite understand this (20) ______ I started meeting individuals who kept, not so healthy friends in their lives and suddenly, as a young teenager, I learned to understand that the friends I keep in my life (21) ______ who I am and desire to be as a person and therefore I have learned to choose my friends wisely over the years. I do not care about the superficial (22) ______ such as looks, money, success or status but rather I emulate those (23) ______ bring laughter, joy, honesty and who can be there for me and also give me a firm kick in the butt when I need it. I always find it intriguing to meet friends of people I know because I can really get a sense of that person by the company they choose to (24) ________ in their life.
(Source: https://www.psychologytoday.com)
(22)
A.elements
B.components
C.attributes
D.ingredients

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks.
The philosopher Aristotle said, “In poverty and other misfortunes of life, true friends are a sure refuge. They keep the young out of mischief; they comfort and aid the old in their weakness, and they incite those in the prime of life to noble deeds. “Growing up”, my mother always used to tell me “your friends are a reflection of you”. I did not quite understand this (20) ______ I started meeting individuals who kept, not so healthy friends in their lives and suddenly, as a young teenager, I learned to understand that the friends I keep in my life (21) ______ who I am and desire to be as a person and therefore I have learned to choose my friends wisely over the years. I do not care about the superficial (22) ______ such as looks, money, success or status but rather I emulate those (23) ______ bring laughter, joy, honesty and who can be there for me and also give me a firm kick in the butt when I need it. I always find it intriguing to meet friends of people I know because I can really get a sense of that person by the company they choose to (24) ________ in their life.
(Source: https://www.psychologytoday.com)
(20)
A.until
B.when
C.since
D.while

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks.
The philosopher Aristotle said, “In poverty and other misfortunes of life, true friends are a sure refuge. They keep the young out of mischief; they comfort and aid the old in their weakness, and they incite those in the prime of life to noble deeds. “Growing up”, my mother always used to tell me “your friends are a reflection of you”. I did not quite understand this (20) ______ I started meeting individuals who kept, not so healthy friends in their lives and suddenly, as a young teenager, I learned to understand that the friends I keep in my life (21) ______ who I am and desire to be as a person and therefore I have learned to choose my friends wisely over the years. I do not care about the superficial (22) ______ such as looks, money, success or status but rather I emulate those (23) ______ bring laughter, joy, honesty and who can be there for me and also give me a firm kick in the butt when I need it. I always find it intriguing to meet friends of people I know because I can really get a sense of that person by the company they choose to (24) ________ in their life.
(Source: https://www.psychologytoday.com)
(24)
A.have
B.create
C.make
D.keep

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.
Most languages have several levels of vocabulary that may be used by the same speakers. In English, at least three have been identified and described.
Standard usage includes those words and expressions understood, used, and accepted by a majority of the speakers of a language in any situation regardless of the level of formality. As such, these words and expressions are well defined and listed in standard dictionaries. Colloquialisms, on the other hand, are familiar words and idioms that are understood by almost all speakers of a language and used in informal speech or writing, but not considered acceptable for more formal situations. Almost all idiomatic expressions are colloquial language. Slang, refers to words and expressions understood by a large number of speakers but not accepted as appropriate formal usage by the majority. Colloquial expressions and even slang may be found in standard dictionaries but will be so identified. Both colloquial usage and slang are more common in speech than writing.
Colloquial speech often passes into standard speech. Some slang also passes into standard speech, but other slang expressions enjoy momentary popularity followed by obscurity. In some cases, the majority never accepts certain slang phrases but nevertheless retains them in their collective memories. Every generation seems to require its own set of words to describe familiar objects and events.
It has been pointed out by a number of linguists that three cultural conditions are necessary for the creation of a large body of slang expressions. First, the introduction and acceptance of new objects and situations in the society; second, a diverse population with a large number of subgroups; third, association among the subgroups and the majority population.
Finally, it is worth noting that the terms “standard”, “colloquial”, and “slang” exist only as abstract
labels for scholars who study language. Only a tiny number of the speakers of any language will be aware that they are using colloquial or slang expressions. Most speakers of English will, during appropriate situations, select and use three types of expressions.
(Source: Adapted from Practice exercises for the TOEFL)
Which of the following could be the best title for the passage?
A.Standard speech
B.Idiomatic phrases
C.Different types of vocabulary
D.Dictionary usage

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.
Most languages have several levels of vocabulary that may be used by the same speakers. In English, at least three have been identified and described.
Standard usage includes those words and expressions understood, used, and accepted by a majority of the speakers of a language in any situation regardless of the level of formality. As such, these words and expressions are well defined and listed in standard dictionaries. Colloquialisms, on the other hand, are familiar words and idioms that are understood by almost all speakers of a language and used in informal speech or writing, but not considered acceptable for more formal situations. Almost all idiomatic expressions are colloquial language. Slang, refers to words and expressions understood by a large number of speakers but not accepted as appropriate formal usage by the majority. Colloquial expressions and even slang may be found in standard dictionaries but will be so identified. Both colloquial usage and slang are more common in speech than writing.
Colloquial speech often passes into standard speech. Some slang also passes into standard speech, but other slang expressions enjoy momentary popularity followed by obscurity. In some cases, the majority never accepts certain slang phrases but nevertheless retains them in their collective memories. Every generation seems to require its own set of words to describe familiar objects and events.
It has been pointed out by a number of linguists that three cultural conditions are necessary for the creation of a large body of slang expressions. First, the introduction and acceptance of new objects and situations in the society; second, a diverse population with a large number of subgroups; third, association among the subgroups and the majority population.
Finally, it is worth noting that the terms “standard”, “colloquial”, and “slang” exist only as abstract
labels for scholars who study language. Only a tiny number of the speakers of any language will be aware that they are using colloquial or slang expressions. Most speakers of English will, during appropriate situations, select and use three types of expressions.
(Source: Adapted from Practice exercises for the TOEFL)
How is slang defined by the author?
A.Words and phrases accepted by the majority of formal usage.
B.Words or phrases understood by the majority but not found in standard dictionaries.
C.Words or phrases that are understood by a restricted group of speakers.
D.Words or phrases understood by a large number of speakers but not accepted as formal usage.

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.
Most languages have several levels of vocabulary that may be used by the same speakers. In English, at least three have been identified and described.
Standard usage includes those words and expressions understood, used, and accepted by a majority of the speakers of a language in any situation regardless of the level of formality. As such, these words and expressions are well defined and listed in standard dictionaries. Colloquialisms, on the other hand, are familiar words and idioms that are understood by almost all speakers of a language and used in informal speech or writing, but not considered acceptable for more formal situations. Almost all idiomatic expressions are colloquial language. Slang, refers to words and expressions understood by a large number of speakers but not accepted as appropriate formal usage by the majority. Colloquial expressions and even slang may be found in standard dictionaries but will be so identified. Both colloquial usage and slang are more common in speech than writing.
Colloquial speech often passes into standard speech. Some slang also passes into standard speech, but other slang expressions enjoy momentary popularity followed by obscurity. In some cases, the majority never accepts certain slang phrases but nevertheless retains them in their collective memories. Every generation seems to require its own set of words to describe familiar objects and events.
It has been pointed out by a number of linguists that three cultural conditions are necessary for the creation of a large body of slang expressions. First, the introduction and acceptance of new objects and situations in the society; second, a diverse population with a large number of subgroups; third, association among the subgroups and the majority population.
Finally, it is worth noting that the terms “standard”, “colloquial”, and “slang” exist only as abstract
labels for scholars who study language. Only a tiny number of the speakers of any language will be aware that they are using colloquial or slang expressions. Most speakers of English will, during appropriate situations, select and use three types of expressions.
(Source: Adapted from Practice exercises for the TOEFL)
Which of the following is TRUE of standard usage?
A.It is limited to written language.
B.It is only understood by the upper classes.
C.It can be used in formal or informal settings.
D.It is constantly changing.

Đều ăn một lượng cỏ như nhau nhưng nuôi cá cho sản lượng cao hơn so với nuôi bò. Nguyên nhân là vì:
A.Bò làm nhiệm vụ sinh con cho nên phần lớn dinh dưỡng để tạo sữa
B.Bò là động vật nhai lại nên hao phí thức ăn  nhiều hơn so với cá
C.Bò là động vật đẳng nhiệt và sống trên cạn nên hao phí năng lượng lớn hơn cá
D.Bò được dùng để kéo cây nên hao phí năng lượng lớn hơn so với cá

Phương thức nào dưới đây về cơ chế điều hòa biểu hiện gen là chung ở sinh vật nhân sơ và nhân chuẩn
A.Xếp cuộn ADN thành NST
B.Các protein hoạt hóa hoặc ức chế bám vào ADN
C.Thêm mũ và đuôi cho ARN sau khi phiên mã
D.Lấy đi phần không mã thông tin mã hóa trên ARN

Một con lắc đơn được treo vào trần của một xe ô tô đang chuyển động theo phương ngang. Tần số dao động của con lắc khi xe chuyển động thẳng đều là . Khi xe chuyển động nhanh dần đều với gia tốc a là . Khi xe chuyển động chậm dần đều với gia tốc a là . Mối quan hệ giữa ,  và  là 
 
A.f0 = f1 = f2.
B.f0< f1< f2.
C. f0< f1 = f2.
D.f0> f1 = f2.