Q: Oxygen is a chemical element with symbol O and atomic number 8. It is a member of the chalcogen group on the periodic table and is a highly reactive nonmetal and oxidizing agent that readily forms compounds (notably oxides) with most elements. By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. At standard temperature and pressure, two atoms of the element bind to form dioxygen, a colorless and odorless diatomic gas with the formula O 2. Diatomic oxygen gas constitutes 20.8% of the Earth's atmosphere. However, monitoring of atmospheric oxygen levels show a global downward trend, because of fossil-fuel burning. Oxygen is the most abundant element by mass in the Earth's crust as part of oxide compounds such as silicon dioxide, making up almost half of the crust's mass.

Many major classes of organic molecules in living organisms, such as proteins, nucleic acids, carbohydrates, and fats, contain oxygen, as do the major inorganic compounds that are constituents of animal shells, teeth, and bone. Most of the mass of living organisms is oxygen as it is a part of water, the major constituent of lifeforms. Oxygen is used in cellular respiration and released by photosynthesis, which uses the energy of sunlight to produce oxygen from water. It is too chemically reactive to remain a free element in air without being continuously replenished by the photosynthetic action of living organisms. Another form (allotrope) of oxygen, ozone (O 3), strongly absorbs UVB radiation and consequently the high-altitude ozone layer helps protect the biosphere from ultraviolet radiation, but is a pollutant near the surface where it is a by-product of smog. At even higher low earth orbit altitudes, sufficient atomic oxygen is present to cause erosion for spacecraft.

Answer the following questions:
1. What is the article about?
2. What is its symbol?
3. it's numeral?
4. is it abundant?
5. how does it rank?
6. What is more abundant?
7. What makes up O2?
8. What seems to be lowering earths levels of O2?
9. Does O2 exist inside our planet?
10. How is O2 released by plants? What process?
11. What is O3?
12. Where is this found?
13. Is it found near the face of the planet?
14. What is this called?
15. Does smog cause this?
16. What can erode space vehicles?
17. At what level?
A: 1. Oxygen
2. O
3. Eight
4. Yes
5. third
6. hydrogen and helium
7. two atoms of oxygen
8. fossil-fuel burning
9. Yes
10. photosynthesis
11. ozone
12. high-altitude
13. Yes
14. a pollutant
15. Yes
16. atomic oxygen
17. higher low earth orbit altitudes

Answer the questions at the end based on the text.

John von Neumann (/vn nmn/; Hungarian: Neumann Janos Lajos, pronounced [njmn jano ljo]; December 28, 1903 February 8, 1957) was a Hungarian-American pure and applied mathematician, physicist, inventor, computer scientist, and polymath. He made major contributions to a number of fields, including mathematics (foundations of mathematics, functional analysis, ergodic theory, geometry, topology, and numerical analysis), physics (quantum mechanics, hydrodynamics, fluid dynamics and quantum statistical mechanics), economics (game theory), computing (Von Neumann architecture, linear programming, self-replicating machines, stochastic computing), and statistics.

He was a pioneer of the application of operator theory to quantum mechanics, in the development of functional analysis, a principal member of the Manhattan Project and the Institute for Advanced Study in Princeton (as one of the few originally appointed), and a key figure in the development of game theory and the concepts of cellular automata, the universal constructor and the digital computer. He published 150 papers in his life; 60 in pure mathematics, 20 in physics, and 60 in applied mathematics. His last work, an unfinished manuscript written while in the hospital, was later published in book form as The Computer and the Brain.

1. What is the nationality of John von Neumann
2. When was he born
3. What does he do?
4. Was he member of Manhattan Project?
5. Did he publish any book?
6. Which book?
7. When did he die?
8. Where did he write his last work?
9. Did he write any book on maths
10. How many paper did he write then?
11. How about physics then?
12. Who develop the game theory?
13. How many paper did he publish in applied maths
14. What are the field at which he has a major contribution?

Numbered answers:

A: 1. Hungarian-American
2. 1903
3. Mathematician
4. yes
5. Yes
6. The Computer and the Brain.
7. 1957
8. In the hospital
9. No, only papers
10. 150
11. 20 in physics
12. von Neumann
13. 60
14. a number of fields

Answer the questions at the end based on the text.

The main reason people come to America is said to be that they can chase the American Dream. Everyone has heard of it, and many have died fighting for it. The only thing is that there is no clear definition of the American Dream. It is not defined by one dream, but by all the opportunities that the United States offers. Since the founding of the United States, people have been _ to define the American Dream.

In the playDeath of a Salesman, every character is trying to realize his own version of the American Dream. Willy feels that he has done so. He has spent his whole life as a not very successful salesman. As he gets older, he starts having conflicts with everyone in his life, and feels that only by killing himself will the people around him be able to finally be happy.

Bernard, on the other hand, feels that the American Dream can only be achieved through career success. He shows that through hard work and dedication he will be crowned with success.

The dialogue of the characters reveals the different attitudes they have toward the American Dream, and the reaction of Willy to the fact that Bernard is very successful while he is not.

Many people try to achieve the American Dream, but few actually do so. As with any goal, it takes hard work and dedication to achieve the American Dream. InDeath of a Salesman, all aspects of this goal are examined. For the goal to be achieved, the dream must be an attainable one which is worth working toward. It also must be a dream that the professional world accepts and finds useful.

1. Why do people come to America?
2. Is that dream easy to define?
3. Is it the same for all?
4. How many people actually make it?
5. What play is all about it?
6. Who is the salesman?
7. Was he good at it?
8. What happens as he ages?
9. What does he decide to do?
10. How will the others feel?
11. Who does he think is successful while he is not?
12. What is his idea of the dream?
13. Is he correct?
14. What does he think you have to do?
15. Do you agree that it has to be useful?

Numbered answers:

A:
1. So they can chase the American Dream.
2. No
3. No
4. few
5. Death of a Salesman
6. Willy
7. No
8. he starts having conflicts with everyone in his life
9. kill himself
10. finally be happy.
11. Bernard
12. It can only be achieved through career success.
13. unknown
14. hard work and dedication
15. unknown