Read the following passage and mark the letter A, B, c, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.

Stories about how people somehow know when they are being watched have been going around for years. However, few attempts have been made to investigate the phenomenon scientifically. Now, with the completion of the largest ever study of the so- called staring effect, there is impressive evidence that this is a recognizable and genuine sixth sense. The study involved hundreds of children. For the experiments, they sat with their eyes (41)__________so they could not see, and with their backs to other children, who were told to either stare at them or look away. Time and time again the results showed that the children who could not see were able to tell when they were being stared at. In a total of more than 18, 000 trials (42)_______worldwide, the children correctly sensed when they were being watched almost 70% of the time. The experiment was repeated with the added precaution of putting the children who were being watched outside the room, (43)_______from the starters by the windows. This was done just in case there was some pretending going on with the children telling each other whether they were looking or not. This prevented the possibility of sounds being transmitted between the children. The results, (44)________less impressive, were more or less the same. Dr. Sheldrake, the biologist (45)________designed the study, believes that the results are convincing enough to find out through further experiments precisely how the staring effect might actually came about.

Điền vào ô trống 45

A. which

B. whose

C. who

D. whom

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.

The Art World

One of the major problems in the art world is how to distinguish and promote an artist. In effect, a market must be created for an artist to be successful. The practice of signing and numbering individual prints was introduced by James Abbott McNeill Whistler, the nineteenth-century artist best known for the painting of his mother, called "Arrangement in Grey and Black", but known to most of US as "Whistler's Mother". Whistler's brother-in-law, Sir Francis Seymour Haden, a less well-known artist, had speculated that collectors might find prints more attractive if they knew that there were only a limited number of copies produced. By signing the work in pencil, an artist could guarantee and personalize each print.

As soon as Whistler and Haden began the practice of signing and numbering their prints, thefr work began to increase in value. When other artists noticed that the signed prints commanded higher prices, they began copying the procedure.

Although most prints are signed on the right-hand side in the margin below the image, the placement of the signature is a matter of personal choice. Indeed, prints have been signed within image, in any of the margins, or even on the reverse side of the 'print. Wherever the artist elects to sign it, a signed print is still valued above an unsigned one, even in the same edition.

What made Whistler's work more valuable?

A. His fame as an artist

B. His painting of his mother

C. His signature on the prints

D. His brother-in-law's prints

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.

        Accustomed though we are to speaking of the films made before 1927 as "silent", the film has never been, in the full sense of the word, silent. From the very beginning, music was regarded as an indispensable accompaniment; when the Lumiere films were shown at the first public film exhibition in the United States in February 1896, they were accompanied by piano improvisations on popular tunes. At first, the music played bore no special relationship to the films; an accompaniment of any kind was sufficient. Within a very short time, however, the incongruity of playing lively music to a solemn film became apparent, and film pianists began to take some care in matching their pieces to the mood of the film.

        As movie theaters grew in number and importance, a violinist, and perhaps a cellist, would be added to the pianist in certain cases, and in the larger movie theaters small orchestras were formed. For a number of years the selection of music for each film program rested entirely in the hands of the conductor or leader of the orchestra, and very often the principal qualification for holding such a position was not skill or taste so much as the ownership of a large personal library of musical pieces. Since the conductor seldom saw the films until the night before they were to be shown (if, indeed, the conductor was lucky enough to see them then), the musical arrangement was normally improvised in the greatest hurry.

        To help meet this difficulty, film distributing companies started the practice of publishing suggestions for musical accompaniments. In 1909, for example, the Edison Company began issuing with their films such indications of mood as “pleasant”, “sad”, “lively”. The suggestions became more explicit, and so emerged the musical cue sheet containing indications of mood, the titles of suitable pieces of music, and precise directions to show where one piece led into the next.

        Certain films had music especially composed for them. The most famous of these early special scores was that composed and arranged for D.w. Griffith's film Birth of a Nation, which was released in 1915.

The passage mainly discusses music that was_________.

A. performed before the showing of a film

B. played during silent films

C. recorded during film exhibitions

D. specifically composed for certain movie theaters

Chất nào sau đây phản ứng ngay với bột S ở điều kiện thường:

A. H₂.

B. O₂.

C. Hg.

D. Fe.

Cho các este: vinyl axetat, etyl axetat, isoamyl axetat, phenyl axetat, anlyl axetat, vinyl benzoat. Số este có thể  điều chế trực tiếp bằng phản ứng của axit và ancol tương ứng (có H₂SO₄ đặc làm xúc tác) là

A. 5.

B. 3.

C. 4.

D. 2.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

More and more investors are pouring _______ money into food and beverage start-ups.

A. an 

B. the 

C. O 

D. a

Một loài thực vật lưỡng bội có 12 nhóm gen liên kết. Do đột biến, ở một quần thể thuộc loài này đã xuất hiện hai thể đột biến khác nhau là thể bốn và thể tứ bội. Số lượng nhiễm sắc thể có trong một tế bào sinh dưỡng của thể bốn và thể tứ bội này lần lượt là

A. 28 và 48  

B. 14 và 24

C. 26 và 48

D. 16 và 24