David refused _________ in the contest because he was ill.

A. to participate   

B. participate         

C. participating     

D. to participating

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. opponent

B. contractual

C. disappear

D. arrangement

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

A. apprehension

B. equation

C. precaution

D. discretion

Although she is my sister, I find it hard to _________ her selfishness.

A. put up with     

B.  catch up with   

C. keep up with    

D. come down with

Read the following passage and mark the letter A, B, C or D on the answer sheet to indicate the correct answer to each of the following questions:

ARE HUMAN BEINGS GETTING SMARTER?

   Do you think you're smarter than your parents and grandparents? According to James Flynn, a professor at a New Zealand university, you are! Over the course of the last century, people who have taken IQ tests have gotten increasingly better scores-on average, three points better for every decade that has passed. This improvement is known as "the Flynn effect," and scientists want to know what is behind it.

   IQ tests and other similar tests are designed to measure general intelligence rather than knowledge. Flynn knew that intelligence is partly inherited from our parents and partly the result of our environment and experiences, but the improvement in test scores was happening too quickly to be explained by heredity. So what was happening in the 20th century that was helping people achieve higher scores on intelligence tests?

   Scientists have proposed several explanations for the Flynn effect. Some suggest that the improved test scores simply reflect an increased exposure to tests in general. Because we take so many tests, we learn test-taking techniques that help us perform better on any test. Others have pointed to better nutrition since it results in babies being bom larger, healthier, and with more brain development than in the past. Another possible explanation is a change in educational styles, with teachers encouraging children to learn by discovering things for themselves rather than just memorizing information. This could prepare people to do the kind of problem solving that intelligence tests require.

   Flynn limited the possible explanations when he looked carefully at the test data and discovered that the improvement in scores was only on certain parts of the IQ test. Test takers didn't do better on the arithmetic or vocabulary sections of the test; they did better on sections that required a special kind of reasoning and problem solving. For example, one part of the test shows a set of abstract shapes, and test-takers must look for patterns and connections between them and decide which shape should be added to the set.

   According to Flynn, this visual intelligence improves as the amount of technology in our lives increases. Every time you play a computer game or figure out how to program a new cell phone, you are exercising exactly the kind of thinking and problem solving that helps you do well on one kind of intelligence test, So are you really smarter than your parents? In one very specific way, you may be.

 The Flynn effect must be the result of .................. .

A. heredity

B. our environment and experiences

C. taking fewer tests

D. memorizing information

So sánh nhóm đất chính ở nước ta về đặc tính, sự phân bố và giá trị sử dụng?

Bệnh bạch tạng ở người do alen lặn trên NST thường qui định, alen trội tương ứng quy định người bình thường. Một cặp vợ chồng bình thường nhưng sinh đứa con đầu lòng bị bạch tạng.Về mặt lý thuyết, hãy tính xác suất để họ sinh 3 người con trong đó có cả trai lẫn gái và ít nhất có được một người không bị bệnh

A. 9/512

B. 63/64

C. 63/512

D. 189/256

Khí nào dưới đây làm xanh quỳ tím ẩm?

A. SO₂

B. Cl₂

C. CH₄

D. NH₃

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 35 to 42.

No sooner had the first intrepid male aviators safely returned to Earth than it seemed that women. too, had been smitten by an urge to fly. From mere spectators, they became willing passengers and finally pilots in their own right, plotting their skills and daring line against the hazards of the air and the skepticism of their male counterparts. In doing so they enlarged the traditional bounds of a women's world, won for their sex a new sense of competence and achievement, and contributed handsomely to the progress of aviation.

But recognition of their abilities did not come easily. "Men do not believe us capable." the famed aviator Amelia Earhart once remarked to a friend. "Because we are women, seldom are we trusted to do an efficient job." Indeed old attitudes died hard: when Charles Lindbergh visited the Soviet Union in i938 with his wife, Anne-herself a pilot and gifted proponent of aviation - he was astonished to discover both men and women flying in the Soviet Air Force.

Such conventional wisdom made it difficult for women to raise money for the up-to-date equipment they needed to compete on an equal basis with men. Yet they did compete, and often they triumphed finally despite the odds.

Ruth Law, whose 590 - mile flight from Chicago to Hornell, New York, set a new nonstop distance record in 1916, exemplified the resourcefulness and grit demanded of any woman who wanted to fly. And when she addressed the Aero Club of America after completing her historic journey, her plain spoken words testified to a universal human motivation that was unaffected by gender: "My flight was done with no expectation of reward," she declared, "just purely for the love of accomplishment."

According to the passage, who said that flying was done with no expectation of reward?

A. Amelia Earhart 

B. Charles Lindbergh

C. Anne Lindgergh

D. Ruth Law

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 35 to 42.

No sooner had the first intrepid male aviators safely returned to Earth than it seemed that women. too, had been smitten by an urge to fly. From mere spectators, they became willing passengers and finally pilots in their own right, plotting their skills and daring line against the hazards of the air and the skepticism of their male counterparts. In doing so they enlarged the traditional bounds of a women's world, won for their sex a new sense of competence and achievement, and contributed handsomely to the progress of aviation.

But recognition of their abilities did not come easily. "Men do not believe us capable." the famed aviator Amelia Earhart once remarked to a friend. "Because we are women, seldom are we trusted to do an efficient job." Indeed old attitudes died hard: when Charles Lindbergh visited the Soviet Union in i938 with his wife, Anne-herself a pilot and gifted proponent of aviation - he was astonished to discover both men and women flying in the Soviet Air Force.

Such conventional wisdom made it difficult for women to raise money for the up-to-date equipment they needed to compete on an equal basis with men. Yet they did compete, and often they triumphed finally despite the odds.

Ruth Law, whose 590 - mile flight from Chicago to Hornell, New York, set a new nonstop distance record in 1916, exemplified the resourcefulness and grit demanded of any woman who wanted to fly. And when she addressed the Aero Club of America after completing her historic journey, her plain spoken words testified to a universal human motivation that was unaffected by gender: "My flight was done with no expectation of reward," she declared, "just purely for the love of accomplishment."

In their efforts to compete with men, early women pilots had difficulty in________.

A. addressing clubs

B. flying nonstop

C. setting records

D. raising money