Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each question.

These days, most people in Britain and the US do not wear very formal clothes. But sometimes it is important to wear the right thing.

Many British people don't think about clothes very much. They just like to be comfortable. When they go out to enjoy themselves, they can wear almost anything. At theatres, cinemas and concerts you can put on what you like from elegant suits and dresses to jeans and sweaters. Anything goes, as long as you look clean and tidy.

But in Britain, as well as in the US, men in offices usually wear suits and ties, and women wear dresses or skirts (not trousers). Doctors, lawyers and business people wear quite formal clothes. And in some hotels and restaurants men have to wear ties and women wear smart dresses.

In many years, Americans are more relaxed than British people, but they are more careful with their clothes. At home, or on holiday, most Americans wear informal or sporty clothes. But when they go out in the evening, they like to look elegant. In good hotels and restaurants, men have to wear jackets and ties, and women wear pretty clothes and smart hairstyles.

It is difficult to say exactly what people wear informal or formal in Britain and the US, because everyone is different. If you are not sure what to wear, watch what other people do and then do the same. You'll feel more relaxed if you don't look too different from everyone else.

Who doesn’t usually wear suits and ties?

A. lawyers

B. doctors

C. drivers

D. businessmen

Phương trình điện li viết đúng là

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 28 to 35.

Translators and interpreters for tech jobs of the future are expected to be one of the fastest growing occupations in the nation, according to a just released survey by Vietnamworks. Almost all positions for programmers, application developers, database and network administrators, engineers, designers, architects, scientists, technicians, and tech support will require bilingual or multilingual fluency.

In just the last two years the demand for tech professionals with foreign language skills has increased more than two and one-half fold, said the survey, and the uptick shows no signs of abating anytime soon. Roughly 400,000 jobs are expected to open for interpreters (who focus on spoken language) and translators (who focus on written language) in the tech segment, between 2017 and 2020, says Tran Anh Tuan. Tuan, who works for the Centre for Forecasting Manpower Needs and Labour Market Information in Ho Chi Minh City doesn't include other industries in his prediction, which are also recruiting ferociously for more people with these same language skills.

While that claim might seem a bit overblown (and amounts to little more than a guess by Tuan), it is clear that innovative technologies like robotics, 3D printing, drones, artificial intelligence and virtual reality will create major upheavals in all sorts of labor markets, not just technology over the next few years. In the last month alone, most every job posted on employment websites throughout Vietnam included the word bilingual. Far higher salaries go to people who work in high tech positions and can speak a foreign language such as English in addition to Vietnamese, says Tran Quang Anh from the Posts and Telecommunications Institute of Technology.

Unfortunately, the surveys show that most graduating Vietnamese students are unable to do more than understand a few basic phrases of foreign languages, and practically none of them can speak any foreign language coherently, The good paying jobs with high salaries and benefits are only available to translators and interpreters who specialize in high tech jobs, says Anh. But it's not just English— graduates are needed with fluency in middle eastern languages like Arabic, Farsi and Pashto (Afghani) as well as German, Japanese and Korean to name just a few. Spanish is also in high demand in Vietnam, primarily because it is the second most common language in the US after English.

A recent tech expo in Hanoi sponsored by Vietnamworks and the Navigos Group attracted nearly 4,000 young tech graduates and recruiters from 14 leading companies looking to fill job vacancies with skilled bilingual workers. The job applicants were young and industrious, said the recruiters. However, missing were candidates with the requisite language skills and most lacked basic 'soft skills' such as written and verbal communication abilities to effectively communicate even in their native Vietnamese language.

Notably, the recruiters said they considered language abilities and soft skills just as, if not more important, than academic ability. Yet virtually all the prospective academically qualified employees lacked even the most basic of interpersonal communication abilities.

Question 30: The word "upheavals" in paragraph 3 is closest in meaning to

A. upward displacements

B. upward disruptions

C. downward changes

D. downward problems

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 to 50.

   Cooperation is the common endeavor of two or more people to perform a task or reach a jointly cherished goal. Like competition and conflict, there are different forms of cooperation, based on group organization and attitudes.

   In the first form, known as primary cooperation, group and individual fuse. The group contains nearly all of each individual’s life. The rewards of the group’s work are shared with each member. There is an interlocking identity of individual, group and task performed. Means and goals become one, for cooperation itself is valued.   

   While primary cooperation is most often characteristic of preliterature societies, secondary cooperation is characteristic of many modem societies. In secondary cooperation, individuals devote only part of their lives to the group. Cooperation itself is not a value. Most members of the group feel loyalty, but the welfare of the group is not the first consideration. Members perform tasks so that they can separately enjoy the fruits of their cooperation in the form of salary, prestige, or power. Business offices and professional athletic teams are examples of secondary cooperation.

   In the third type, called tertiary cooperation or accommodation, latent conflict underlies the shared work. The attitudes of the cooperating parties are purely opportunistic: the organization is loose and fragile. Accommodation involves common means to achieve antagonistic goals: it breaks down when the common means cease to aid each party in reaching its goals. This is not, strictly speaking, cooperation at all, and hence the somewhat contradictory term antagonistic cooperation is sometimes used for this relationship.

Which of the following statements about primary cooperation is supported by information in the passage?

A. It is an ideal that can never be achieved

B. It was confined to prehistoric times

. It is usually the first stage of cooperation achieved by a group of individuals attempting to cooperate

D. It is most commonly seen among people who have not yet developed reading and writing skills

Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

A. inventor

B. physicist 

C. president          

D. property

Một gen ở sinh vật nhân thực có chiều dài 5100 A 0 . Số nuclêôtit loại G của gen là 600. Sau đột biến, số liên kết hiđrô của gen là 3601. Hãy cho biết gen đã xảy ra dạng đột biến nào? (Biết rằng đây là dạng đột biến chỉ liên quan đến một cặp nuclêôtit trong gen).

A. Thay thế một cặp G – X bằng một cặp A – T.

B. Mất một cặp A – T.

C. Thay thế một cặp A – T bằng một cặp G – X.

D. Thêm một cặp G – X.

Các electron của nguyên tử nguyên tố X được phân bố trên 4 lớp, lớp N có 3 electron. Số đơn vị điện tích hạt nhân của nguyên tử nguyên tố X là bao nhiêu

A. 21

B. 23

C. 31

D. 33