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 following questions from 30 to 34.

In Science, a theory is a reasonable explanation of observed events that are related. A theory often involves an imaginary model that helps scientists picture the way an observed event could be produced. A good example of this is found in the kinetic molecular theory, in which gases are pictured as being made up of many small particles that are in constant motion.

A useful theory, in addition to explaining past observation, helps to predict events that have not as yet been observed. After a theory has been publicized, scientists design experiments to test the theory. If observations confirm the scientists’ predictions, the theory is supported. If observations do not confirm the predictions, the scientists must search further. There may be a fault in the experiment, or the theory may have to be revised or rejected.

Science involves imagination and Creative thinking as well as collecting information and performing experiments. Facts by themselves are not Science. As the mathematician Jules Henri Poincare said: “Science is built with facts just as a house is built with bricks. But a collection of facts cannot be called Science any more than a pile of bricks can be called a house.”

Most scientists start an investigation by finding out what other scientists have learned about a particular problem. After known facts have been gathered, the scientist comes to the part of the investigation that requires considerable imagination. Possible Solutions to the problem are formulated. These possible Solutions are called hypotheses. In a way, any hypothesis is a leap into the unknown. It extends the scientist’s thinking beyond the known facts. The scientist plans experiments, performs calculations, and makes observations to test hypotheses. For without hypotheses, further investigation lacks purpose and direction. When hypotheses are confirmed, they are incorporated into theories.

What does the passage mainly discuss?

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You are old enough to take _____ for what you have done.

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We didn’t want to swim in the river. It looked very dirty.

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Laura practised playing the instrument a lot. She could hardly improve her performance.  

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However (A) small, my apartment (B) is well designed (C) and nicely decorated (D).

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_____cheat on the exam have to leave the room.

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If only I had studied hard last semester.

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The class will start at 8:00 a.m. on the ______, so don’t be late!

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After a meal in a restaurant, you ask the waiter for the ________.

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There used to be a cinema here but it’s been _____ down.

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When he woke up, he realized that the things he had dreamt about could not ____ have happened.

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Can you imagine _______alone in a very strange country?

Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best completes each of the following exchanges.

Peter’s teacher is commenting on his essay.

-Teacher: “Peter, you’ve written a much better essay this time.”

- Peter: “_______________”

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Don’t ____to any conclusions before you know the full facts.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 25 to 29. Fill in the appropriate word in question 28

One of the most important (25) _____ of a standardized test is time. You’ll only be allowed a certain number of minutes for each section, so it is very important that (26) _______. The most important time strategy is pacing yourself. Before you begin, take just a few seconds to survey the test, noting the number of questions and the sections that looks easier than the rest. Then, make a rough time schedule based on the amount of time available to you. Mark the half-way point on your test and make a note beside that mark of the time when the testing period is half over.

Once you begin the test, continue moving. If you work slowly in an attempt to make fewer mistakes, your mind will become bored and begin to wander. You’ll end up making far more mistakes if you’re not concentrating. If you take too long to answer questions that stump you, you may end up (27) _____out of time before you finish. So don’t stop for difficult questions. Skip them and move on. You can come back to them later if you have time. A question that takes you five seconds to answer counts as much as one that takes you several minutes, so pick up the easy points first. (28)___________, answering the easier questions first helps build your confidence and gets you in the testing groove. If you are a little ahead, you know you are on track and may even have a little time left to check your work. If you are a little behind, you have 4 several choices. You can pick up the pace a little, but do this (29) ______ if you can do it comfortably.

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

Marie Curie was the first woman _______ two Nobel prizes.