Hỗn hợp X gồm hai anken là chất khí ở điều kiện thường. Hiđrat hóa X thu được hỗn hợp Y gồm bốn ancol (không có ancol bậc III). Anken trong X là

A. propilen và isobutilen

B. propen và but-1-en

C. etilen và propilen

D. propen và but-2-en

Markthe letter A, B,C or D to indicate the correct answer to each of the following questions.

Question 17: For me, the film didn't      ________ all the enthusiastic publicity it received.

A. come up

B. live up to

C. turn up to

D. live up

Cho các chất riêng biệt sau: Dung dịch glucozơ, dung dịch hồ tinh bột. Thuốc thử dùng để nhận biết các chất là

A. quỳ tím

B. dung dịch NaOH

C. dung dịch I₂

D. Na

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 34.       

       After twenty years of growing student enrollments and economic prosperity, business schools in the United States have started to face harder times. Only Harvard’s MBA School has shown a substantial increase in enrollment in recent years. Both Princeton and Stanford have seen decreases in their enrollments. Since 1990, the number of people receiving Masters in Business Administration (MBA) degrees, has dropped about 3 percent to 75,000, and the trend of lower enrollment rates is expected to continue.

       There are two factors causing this decrease in students seeking an MBA degree. The first one is that many graduates of four-year colleges are finding that an MBA degree does not guarantee a plush job on Wall Street, or in other financial districts of major American cities. Many of the entry- level management jobs are going to students graduating with Master of Arts degrees in English and the humanities as well as those holding MBA degrees. Students have asked the question, “Is an MBA degree really what I need to be best prepared for getting a good job?” The second major factor has been the cutting of American payrolls and the lower number of entry-level jobs being offered. Business needs are changing, and MBA schools are struggling to meet the new demands.

The word “prosperity” in the first paragraph could be best replaced by which of the following?

A. success  

B. surplus    

C. nurturing          

D. education

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 34.

  Carnegie Hall, which is a famous concert hall in New York City, has again undergone a restoration. While this is not the first, it is certainly the most extensive in the building’s history. As a result of this new restoration, Carnegie Hall once again has the quality of sound that it had when it was first built.

  Carnegie Hall owes its existence to Andrew Carnegie, the wealthy owner of a steel company in the late 1800s. The hall was finished in 1891 and quickly gained a reputation as an excellent performing arts hall where accomplished musicians gained fame. Despite its reputation, the concert hall suffered from several detrimental renovations over the years. During the Great Depression, when fewer people could afford to attend performances, the directors sold part of the building to commercial businesses. As a result, a coffee shop was opened in one comer of the building, for which the builders replaced the brick and terra cotta walls with windowpanes. A renovation in 1946 seriously damaged the acoustical quality of the hall when the makers of the film Carnegie Hall cut a gaping hole in the dome of the ceiling to allow for lights and air vents. The hole was later covered with short curtains and a fake ceiling, but the hall never sounded the same afterwards.

          In 1960, the violinist Isaac Stem became involved in restoring the hall after a group of real estate developers unveiled plans to demolish Carnegie Hall and build a high-rise office building on the site. This threat spurred Stem to rally public support for Carnegie Hall and encourage the City of New York to buy the property. The movement was successful, and the concert hall is now owned by the city. In the current restoration, builders tested each new material for its sound qualities, and they replaced the hole in the ceiling with a dome. The builders also restored the outer walls to their original appearance and closed the coffee shop. Carnegie has never sounded better, and its prospects for the future have never looked more promising.

What major change happened to the hall in 1946?

A. The acoustic dome was damaged.

B. Space in the building was sold to commercial businesses.

C. The walls were damaged in an earthquake.

D. The stage was renovated.