80- Scientists do not yet know if there is life of any kind somewhere outside the solar system. This has long been a/an ---------- to us and will most probably continue to be so for many years to come.
1) exploration 2) expectation 3) mystery 4) contact

81- No one in class wants Ted to be a member of their group because he almost always avoids ----------- what is assigned to him as his responsibility.
1) exercising 2) including 3) encouraging 4) performing

82- We had trouble doing the experiment; it is really a very ------------- one.
1) anxious 2) mental 3) concerned 4) complicated

83- Death finally brought an end to her ----------; she is in no pain any more.
1) warning 2) suffering 3) legend 4) inaction

84- Vitamins cannot be ----------- by our bodies; we get them from what we eat or drink.
1) involved 2) manufactured 3) concentrated 4) accepted

85- Have you ever noticed that the neighbor's trees have grown ----------.
1) considerably 2) comfortably 3) strongly 4) actively

86- The general arrangement of the different parts of something that is made, such as a building, book, machine, etc is called a -----------.
1) basis 2) project 3) design 4) catalog

87- The president has been fully ------- the recent advances.
1) compared with 2) stretched to 3) released on 4) informed of

Part B: Cloze Test
Directions: Questions 88-92 are related to the following passage. Read the passage and decide which choice (1), (2), (3), or (4) best fits each space. Then mark your answer sheet.

Food and clothing presented difficult problems. Much was (88) --------- from the Eskimo, a people of Greenland and northern Canada who had accustomed themselves to living in conditions of (89) ----------- cold. The absence of fresh food, (90) --------- fruit and vegetables, meant that polar travellers were threatened with the disease scurvy, whose (91) --------- has been properly understood only in the last 100 years. Shelter and (92) ---------- for fires are other problems which, little by little, have been to some extent overcome.

88- 1) taught 2) helped 3) improved 4) learned

89- 1) extreme 2) giant 3) necessary 4) efficient
%% Page 16
111C زبان انگلیسی صفحه ۱۵

90- 1) certainly 2) directly 3) especially 4) constantly

91- 1) impression 2) prevention 3) expression 4) promotion

92- 1) matter 2) trash 3) device 4) fuel

\fbox{\begin{minipage}{\textwidth} Part C: Reading Comprehension Directions: In this part of the test, you will read two passages. Each passage is followed by four questions. Answer the questions by choosing the best choice (1), (2), (3), or (4). Then mark your answer sheet. \end{minipage}}

Passage 1:
Weather forecasting is the use of science and technology to predict the state of the atmosphere for a given location. Human beings have tried to predict the weather informally for thousands of years, and formally since the nineteenth century. Weather forecasts are made by collecting quantitative data about the current state of the atmosphere on a given place and using scientific understanding of atmospheric processes to predict how the atmosphere will be on that place.

Once an all-human endeavor based mainly upon changes in barometric pressure, current weather conditions, and sky condition, weather forecasting now relies on computer-based models that considers atmospheric factors. Human input is still required to select the best possible forecast model to base the forecast upon, which involves pattern recognition skills, teleconnections, knowledge of model performance, and knowledge of model biases. The ever-changing nature of the atmosphere, the great computational power required to solve the equations that describe the atmosphere, error involved in measuring the initial conditions, and an incomplete understanding of atmospheric processes mean that forecasts become less accurate as the difference in current time and the time for which the forecast is being made increases.

93- According to the passage, weather forecasting ------------.
1) is a new technology 2) has a long history
3) began less than 100 years ago 4) is not as effective as it used to be

94- The passage is mainly concerned with ---------------.
1) the reasons why humans are attracted to weather forecasting
2) the circumstances under which weathermen make mistakes
3) a definition of weather forecasting and the way it is done
4) the early methods used to predict weather conditions

95- What does the passage state about the role of humans in modern weather forecasting?
1) Human work is a necessity.
2) There is no need for humans.
3) Even people with no expert knowledge can do weather forecasting.
4) It now depends more on human intervention than was the case in less modern weather forecasting models.

96- The word ``which'' near the end of paragraph 2 refers to ----------.
1) processes 2) forecasts
3) difference in current time 4) time
%% Page 17 Passage 2:
Zoo officials say that they are concerned about animals. However, most zoos remain "collections" of interesting "items" rather than protective habitats. Zoos teach people that it is acceptable to keep animals in captivity. However, animals in zoos are bored, limited, lonely, and far from their natural homes.
Zoos claim to educate people, but in fact, visitors don't learn anything meaningful about the natural behavior, intelligence, or beauty of animals. Most zoo areas are quite small, and visitors can rarely observe animals' normal behavior in these unnatural spaces. Nor can they learn much from the labels on cages, which list only the species' name, diet, and where it normally lives.
The animals are kept together in small spaces, with no privacy and little opportunity for mental stimulation or physical exercise. This results in abnormal and self-destructive behavior called zoochosis. In a worldwide study of zoos, the Born Free Foundation found that zoochosis is common among animals in small spaces or cages. Another study found that elephants spend 22 percent of their time engaging in abnormal behaviors, such as repeated head movements or biting cage bars. Bears spend 30 percent of their time walking back and forth. These are all signs of distress.
Zoos also claim to save animals from extinction. However, zoos that breed endangered animals, such as big cats and Asian elephants, often do not release them to the wild. Zoos talk a lot about their breeding programs. One reason is to ease people's worry about endangered species. The other reason is to attract a lot of customers who enjoy seeing baby animals. How many contests have we seen to name baby animals?
Ultimately we will save endangered species only if we save their habitats. We also need to stop people from killing them. Instead of supporting zoos, we should support groups that work to protect animals and preserve their homes in the wild.

1. [

97-] The author of the passage suggests that zoos -------------.

1. [1)] negatively affect the animals they shelter
2. [2)] change animals' behavior as well as their natural diet
3. [3)] are unfortunately necessary and we cannot do without them
4. [4)] should be brought under better control so that they would be useful

[

98-] According to the passage, the information visitors get about animals from visiting them at zoos -----------.

1. [1)] is as much as they can get from observing animals in nature
2. [2)] meaningful enough to be of practical use
3. [3)] is absolutely wrong and misleading
4. [4)] is incomplete and limited

[

99-] All of the following are mentioned in the passage about animals kept in zoos EXCEPT that such animals -----------.

1. [1)] lose their privacy
2. [2)] are not physically active enough
3. [3)] do not get the chance to be mentally stimulated
4. [4)] are often used as what researchers need to perform experiments

[

100-] The last paragraph of the passage includes a number of -----------.
1) complaints 2) comparisons 3) suggestions 4) warnings
%% Page 18
Booklet No. 2
Thursday Morning 93/4/5

Islamic Republic of Iran Ministry of Science, Research and Technology National Organization for Educational Testing

{\Large National University Entrance Exam --- Year 1393}

{\large Specialized Exam} {\large Mathematical Sciences Group}

|p{6cm}|} Last Name and First Name:	Applicant Number:
Number of Questions: 135	Response Time: 175 minutes

Title of exam subjects for the Specialized Exam of the Mathematical Sciences Group, number of questions, question numbers, and response time

Row	Exam Subject	Number of Questions	From No.	To No.	Response Time
1	Mathematics	55	101	155	85 minutes
2	Physics	45	156	200	55 minutes
3	Chemistry	35	201	235	35 minutes

Printing and copying of questions by any means (electronic, etc.) after the exam is held for any examination purposes is only permitted with the authorization of this organization, and violators will be prosecuted according to the law.
%% Page 19 Mathematics

106- Which point on the $x$-axis should be chosen so that the sum of its distances from the two points $A(1,5)$ and $B(7,-2)$ is maximum?
(1) $8$ (2) $9$ (3) $10$ (4) $11$

114. The limit $x\left[\dfrac{1}{x}\right]$, in which case is not a finite number?
(1) $x \to 0^-$ (2) $x \to 0^+$ (3) $x \to -\infty$ (4) $x \to +\infty$

115. The function with the rule $f(x) = (-1)^{[x]}\sin\dfrac{\pi}{2}x$, $x \in \mathbf{Z}$, at integer points, in terms of continuity, is:
(1) continuous only at even integers (2) continuous only at odd integers (3) always discontinuous (4) always continuous

116. If $\displaystyle\lim_{x \to 3} \dfrac{x-4}{2x^2+ax+b} = -\infty$, then $a+b$ is equal to:
(1) $-3$ (2) $3$ (3) $6$ (4) $12$