the burglar might come back. you’d better change all the locks

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

Dark matter in the universe is believed by some scientists lớn be a substance that is not readily observable because it does not directly refract light or energy. Its existence can only be deduced because of the effect that it has on surrounding matter. In fact, some members of the scientific community have argued that dark matter does not actually exist. Others, however, believe in its existence, in part because the scientific community does not have a complete understanding of gravita science. On the other hand, some would argue that it is the understanding of gravitational science that leads most scientists lớn believe in the existence of dark matter, because without dark matter, there are many cosmological phenomena that are difficult lớn explain. 

For example, dark matter in the universe may have a peculiar effect on the Milky Way galaxy. Some scientists believe that the interaction between dark matter and other smaller, nearby galaxies is causing the Milky Way galaxy lớn take on a warped profile. It has been asserted that not only does dark matter exist, it may also be responsible for the Milky Way’s unusual shape. The interaction referenced involves two smaller galaxies near the Milky Way, called Magellanic clouds, moving through an enormous amount of dark matter, which, in effect, enhances the gravitational pull that the two Magellanic clouds could have on the Milky Way and other surrounding bodies. Without the existence of the dark matter, the Magellanic clouds would not have sufficient mass lớn have such a strong effect on the bend of the Milky Way galaxy. 

The strongest evidence for the validity of this hypothesis rests in Newtonian physics, and the hypothesis that anything with mass will exert a gravitational pull. The Milky Way and other galaxies with peculiar warped shapes are being molded by a gravitational force. However, there is nothing readily observable with sufficient mass that could cause such a high level of distortion via gravitational pull in the vicinity of the Milky Way. Therefore, something that is not easily observed must be exerting the necessary force lớn create the warped shape of the galaxy. 

Aaron Romanowsky and several colleagues have questioned the effect that dark matter might have on galaxies. They point lớn the existence of several elliptical galaxies surrounded by very little dark matter as evidence that dark matter is not, in fact, the cause of the warped galaxies. While they bởi not claim that their findings should be interpreted lớn conclude that dark matter does not exist, they apparently believe that the results of their studies cast doubt on some of the conventional theories of galaxy formation and manipulation. 

Several models constructed by researchers from the University of California at Berkeley, however, point lớn the idea that dark matter is the most likely explanation for the distorted shape of the Milky Way and other galaxies. Using computer models, they have mapped the likely interactions between certain galaxies and the surrounding dark matter, and those models have shown not only the possibility that dark matter is responsible for the warped shape of the Milky Way, but that the relationship between the dark matter and the Magellanic clouds is dynamic; the movement of the clouds through the dark matter seems lớn create a wake that enhances their gravitational influence on the Milky Way. 

What does the passage offer as evidence for the existence of dark matter?

A. A photograph taken with the aid of a refracting telescope.

B. The enormous mass of Magellanic clouds.

C. The shape of the Milky Way galaxy.

D. A complete understanding of gravitational science.

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

Culture has a strong influence on non–verbal communication. Even the simple act of looking someone in the eye is not at all that simple. In the USA, Americans are (5) ______ lớn look directly at people when speaking lớn them. It shows interest in what they are saying and is thought lớn carry a (6) ______ of honesty. Meanwhile, in nhật bản and Korea, people avoid long periods of eye liên hệ. It is considered more polite lớn look lớn the side during a conversation. The Lebanese, (7) ______, stand close together and look intensely into each other's eyes. The action shows sincerity and gives people a better sense of what their counterparts want. Given such differences with even the most common expressions, people (8) ______ travel or work abroad have a real need lớn learn the other culture's body toàn thân language. People tend lớn be unaware of the messages they are sending lớn others. So, it is (9) ______ lớn consider your own body toàn thân language before dealing with people from other cultures. Knowing about the body toàn thân language of friends, clients, and colleagues can be very helpful in improving understanding and avoiding miscommunication.

Điền vô dù số 5

A. encouraged

B. assisted

C. forbidden

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D. opposed

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

He was imprisoned because he revealed secrets lớn the enemies.

A. disowned

B. declared

C. betrayed

D. concealed

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

A severe illness when she was just nineteen months old deprived the well–known writer and lecturer Helen Keller from both her sight and hearing.

A. just

B. deprived

C. when

D. from both

Mark the letter A, B, C or D on your answer sheet lớn indicate the word(s) that is CLOSET in meaning lớn the underlined word(s) in each of the following questions.

The members of the orchestra have arrived an hour prior to the performance for a short rehearsal.

A. when

B. before

C. after

D. while

Mark the letter A, B, C or D on your answer sheet lớn indicate the sentence that is closest in meaning lớn each of the following questions.

A drug may affect several functions, even though it’s targeted at only one.

A. A drug is taken for a specific purpose, but it may have a range of other effects.

B. However effective a drug may be, its functions have lớn be several.

C. Despite various other uses, a drug usually has a function for a special effect.

D. The functions expected of a drug are various even if it is used for a specific disease.

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