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.

Millions of people are using cell phones today. In many places, it is actually considered unusual not to use one. In many countries, cell phones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.

 The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

 On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.

 What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.

 As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.

The man mentioned in the passage, who used his cell phone too often, ____________.

A. suffered serious loss of mental ability

B. abandoned his family

C. had a problem with memory

D. could no longer think lucidly

Sự xuất hiện của sâu bọ bay trong kỉ Jura tạo điều kiện cho

A. sự phát triển ưu thế của bò sát khổng lồ.

B. cây hạt trần phát triển mạnh.

C. sự chuyển từ lưỡng cư thành các bò sát đầu tiên.

D. sự xuất hiện của bò sát bay ăn sâu bọ.

Read the passages and circle the best option A, B, C, or D to complete the following questions or statements

Alexis de Tocqueville, the French political scientist, historian, philosopher and politician, is most famous for a four-volume book he wrote called “Democracy in America”. He came to America in 1831 to study the American form of democracy and what it might mean to the rest of the world. After a visit of only nine months, he wrote a remarkable book which is regarded as a classic. De Tocqueville had unusual powers of observation. He described not only the democratic system of government and how it operated, but also its effect on how Americans think, feel, and act. Many scholars believe he had a deeper understanding of traditional American beliefs and values than anyone else who has written about the United States. What is so remarkable is that many of these traits which he observed nearly 200 years ago, are still visible and meaningful today. His observations are also important because the timing of his visit, the 1830s, was before America was industrialized. This was the era of the small farmer, the small businessman, and the settling of the western frontier. It was the period of history when the traditional values of the new country were newly established. In just a generation, some 40 years since the adoption of the U.S. Constitution, the new form of government had already produced a society of people with unique values. He was, however, a neutral observer and saw both the good and bad sides of these qualities.

The first part of “Democracy in America” was written in 1831-32 and published in 1835. A highly positive and optimistic account of American government and society, the book was very well received. He attempted to get a glimpse of the essence of American society, all the while promoting his own philosophy: the equaling of the classes and the inevitable depth of aristocratic privilege. The rest of the book he labored on for four years, and in 1840 the second part was published. This was substantially more pessimistic than the first, warning of the dangers despotism and governmental centralization, and applying his ideas and criticisms more directly to France. As a result, it was not received as well as the first part, except in England where it was acclaimed highly.

Which of the following is true, according to the passage? 

A. the visit lasted only five months. 

B. the visit coincided with American industrialization. 

C. the first part was published in 1835; the second part in 1840. 

D. the second part was more optimistic than the first. 

Mark the letter A, B,C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions

The Mediterrannean, a large sea surrounded by land, (A) is a mile deep (B) on average (C) and more than 2000 miles length.(D)

A. surrounded by land

B. mile deep

C. on average

D. 2000 miles length

Work efficiency has increased exponentially each year, thanks to computers and their ability to multitask. 

A. slightly 

B. at a very fast rate 

C. constantly 

D. at a very slow rate 

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions

“I could have eaten a horse” Bob said. 

A. hated horses very much 

B. ran much faster than a horse 

C. could win a horse races game 

D. was very hungry