Pháp phải kí Hiệp định Giơnevơ năm 1954 về Đông Dương, công nhận

A. Campuchia là một quốc gia tự trị.

B. Campuchia là một nước không có đất cho quân giải phóng đóng,

C. Campuchia là một nước trung lập.

D. độc lập, chủ quyền, thống nhất và toàn vẹn lãnh thổ của Campuchia.

Đốt cháy hoàn toàn m gam este T (no, đơn chức, mạch hở) cần vừa đủ a mol khí O₂, thu được CO₂ và a mol H₂O. Mặt khác, cho m gam E tác dụng vừa đủ với dung dịch KOH, thu được 3,36 gam muối. Giá trị của m là

A. 3,60

B. 2,96

C. 3,52

D. 2,40

Read the passage bellow and then choose a suitable word A, B, C or D to fill in each blank.

The Earth's Energy Budget

The way the Earth interacts ___ (35)___ the sun's energy can be displayed in a diagram called the Earth’s energy budget. It displays the sun's energy that reaches us and how much of that energy absorbed and reflected is by the earth and___(36)___ atmosphere. Solar energy reaches earth as electromagnetic radiation. Once the energy reaches earth, some of it is absorbed by the atmosphere, ___(37)___ clouds.

Some of it makes it to the earth's surface, and is ___(38)___ by land and oceans. The ___(39)___ of energy absorbed affects temperature. The energy ___(40)___ is not absorbed by the earth or its atmosphere is reflected. back out to space in the same wavelengths in which it came to earth. On ___(41)___, the amount of energy coming in is equal to the amount of energy going out. Therefore, we say the earth's energy budget is balanced. ___(42)___ more energy was coming in than was going out, the earth's temperature would increase. On the other hand, if too much energy is reflected, and not absorbed, we'll see a ___(43)___ in the earth's temperatures. Of all of the sun's energy that hits the Earth, about 70% is absorbed by ___(44)___ land, ocean, atmosphere and clouds and about 30% is reflected back into space.Question 38

A. injected

B. accessed

C. soaked

D. absorbed

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

A. holiday

B. certainty 

C. industry 

D. adventure

Cho ba hàm số: y = 1 2 x 2 ; y = x 2 ; y = 2 x 2

Vẽ đồ thị của ba hàm số này trên cùng một mặt phẳng tọa độ.

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  45 to 54.

A survey is a study, generally in the form of an interview or a questionnaire, which provides information concerning how people think and act. In the United States, the best-known surveys are the Gallup poll and the Harris poll. As anyone who watches the news during campaigns presidential knows, these polls have become an important part of political life in the United States.

North Americans are familiar with the many “person on the street” interviews on local television news shows. While such interviews can be highly entertaining, they are not necessarily an accurate indication of public opinion. First, they reflect the opinions of only those people who appear at a certain location. Thus, such samples can be biased in favor of commuters, middle-class shoppers, or factory workers, depending on which area the news people select. Second, television interviews tend to attract outgoing people who are willing to appear on the air, while they frighten away others who may feel intimidated by a camera. A survey must be based on a precise, representative sampling if it is to genuinely reflect a broad range of the population.

In preparing to conduct a survey, sociologists must exercise great care in the wording of questions. An effective survey question must be simple and clear enough for people to understand it. It must also be specific enough so that there are no problems in interpreting the results. Even questions that are less structured must be carefully phrased in order to elicit the type of information desired. Surveys can be indispensable sources of information, but only if the sampling is done properly and the questions are worded accurately.

There are two main forms of surveys: the interview and the questionnaire. Each of these forms of survey research has its advantages. An interviewer can obtain a high response rate because people find it more difficult to turn down a personal request for an interview than to throw away a written questionnaire. In addition, an interviewer can go beyond written questions and probe for a subject’s underlying feelings and reasons. However, questionnaires have the advantage of being cheaper and  more consistent

The word "precise" in line 10 is closest in  meaning to

A. rational

B. accurate

C. required

D. planned

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.

Traditionally in America, helping the poor was a matter for private charities or local governments. Arriving immigrants depended mainly on predecessors from their homeland to help them start a new life. In the late 19th and early 20th centuries, several European nations instituted public-welfare programs. But such a movement was slow to take hold in the United States because the rapid pace of industrialization and the ready availability of farmland seemed to confirm the belief that anyone who was willing to work could find a job. Most of the programs started during the Depression era were temporary relief measures, but one of the programs Social Security - has become an American institution. Paid for by deductions from the paychecks of working people, Social Security ensures that retired persons receive a modest monthly income and also provides unemployment insurance, disability insurance, and other assistance to those who need it. Social Security payments to retired persons can start at age 62, but many wait until age 65, when the payments are slightly higher. Recently, there has been concern that the Social Security fund may not have enough money to fulfill its obligations in the 21st century, when the population of elderly Americans is expected to increase dramatically. Policy makers have proposed various ways to make up the anticipated deficit, but a long-term solution is still being debated. In the years since Roosevelt, other American presidents have established assistance programs. These include Medicaid and Medicare; food stamps, certificates that people can use to purchase food; and public housing which is built at federal expense and made available to persons on low incomes.

        Needy Americans can also turn to sources other than the government for help. A broad spectrum of private charities and voluntary organizations is available. Volunteerism is on the rise in the United States, especially among retired persons. It is estimated that almost 50 percent of Americans over age 18 do volunteer work, and nearly 75 percent of U.S. households contribute money to charity.

Most of the public assistance programs ________ after the severe economic crisis.

A. were introduced into institutions

B. did not become institutionalize

C. functioned fruitfully in institutions

D. did not work in institutions