Article: The working memory model explains many practical observations, such as why it is easier to do two different tasks (one verbal and one visual) than two similar tasks (e.g., two visual), and the aforementioned word-length effect. However, the concept of a central executive as noted here has been criticised as inadequate and vague.[citation needed] Working memory is also the premise for what allows us to do everyday activities involving thought. It is the section of memory where we carry out thought processes and use them to learn and reason about topics.

Question: Which part of memory allows us to go about our daily lives?
Ans: Working memory


Article: The major roles of construction and of services (government, communications, banking and finance, food production, entertainment, and legal services) in Brasília's economy reflect the city's status as a governmental rather than an industrial center. Industries connected with construction, food processing, and furnishings are important, as are those associated with publishing, printing, and computer software. GDP is divided in Public Administration 54.8%, Services 28.7%, Industry 10.2%, Commerce 6.1%, Agribusiness 0.2%.

Question: How much of Brasilia's GDP is from Public Administration?
Ans: 54.8%


Article: In late 1952 Eisenhower went to Korea and discovered a military and political stalemate. Once in office, when the Chinese began a buildup in the Kaesong sanctuary, he threatened to use nuclear force if an armistice was not concluded. His earlier military reputation in Europe was effective with the Chinese. The National Security Council, the Joint Chiefs of Staff, and the Strategic Air Command (SAC) devised detailed plans for nuclear war against China. With the death of Stalin in early March 1953, Russian support for a Chinese hard-line weakened and China decided to compromise on the prisoner issue.

Question: What was SAC an abbreviation of?
Ans: Strategic Air Command


Article: The most familiar, and historically the oldest, types of glass are "silicate glasses" based on the chemical compound silica (silicon dioxide, or quartz), the primary constituent of sand. The term glass, in popular usage, is often used to refer only to this type of material, which is familiar from use as window glass and in glass bottles. Of the many silica-based glasses that exist, ordinary glazing and container glass is formed from a specific type called soda-lime glass, composed of approximately 75% silicon dioxide (SiO2), sodium oxide (Na2O) from sodium carbonate (Na2CO3), calcium oxide, also called lime (CaO), and several minor additives. A very clear and durable quartz glass can be made from pure silica, but the high melting point and very narrow glass transition of quartz make glassblowing and hot working difficult. In glasses like soda lime, the compounds added to quartz are used to lower the melting temperature and improve workability, at a cost in the toughness, thermal stability, and optical transmittance.

Question: What can a very strong and transparent glass be made from?
Ans:
pure silica