In this task, you're given an article, a question which often contains a blank, four options (associated with "A", "B", "C", "D") and the answer to that question. Your task is to classify whether the given answer is correct or not by providing "Yes" or "No", based on the article.

[EX Q]: Article: More than a century ago, the composer and bandleader John Philip Sousa warned that technology would destroy music, who said, "These talking machines are going to ruin the artistic development of music in this country. When I was a boy ... in front of every house in the summer evenings you would find young people together singing the songs of the day or the old songs. Today you hear these terrible machines going night and day. We will not have a vocal cord left." Music has greatly changed in the past hundred years, which has been everywhere in our world: rivers of digital melody flow on the Internet or on disc; MP3 players with forty thousand songs can be put in a back pocket or a purse. Yet, for most of us, music is no longer something we do ourselves, or even watch other people do in front of us. It has become a radically virtual medium, an art without a face. Ever since Edison invented the phonograph cylinder , people have been assessing what the medium of recording has done for and to the art of music. Sousa was a spokesman for the party of doom; in the opposite corner are the utopians , who argue that technology has not imprisoned music but liberated it. Before Edison came along, Beethoven's symphonies could be heard only in select concert halls. Now the recordings carry the man from Bonn to the corners of the earth. Glenn Gould, after renouncing live performance in 1964, predicted that within the century the public concert would disappear into the electronic air. Having discovered much of my favorite music through LPs and CDs, I am not about to join Sousa's party. Modern urban environments are often so soulless or ugly that I'm grateful for the humanizing touch of electronic sound. But neither can I accept Gould's slashing futurism. I want to be aware of technology's effects, positive and negative. Fortunately, scholars and critics have been methodically exploring this _ for many decades, trying to figure out exactly what happens when we listen to music with no musicians in the room.
Question: The author's attitude towards the recorded music may best be described as _ .
Options: (A) dissatisfied (B) defensive (C) optimistic (D) objective
Asnwer: C
[EX A]: No

[EX Q]: Article: Though the facts that too many people on earth and a too rapid increase in the number added each year are not in argument, we always begin the discussion of "population as global issue" with what most persons mean like this. It was quite right to compare demographic growth to "a long, thin powder fuse that bums steadily and hesitatingly until it finally reaches the charge and explodes". To understand the current situation, which is characterized by rapid increases in population, it is necessary to understand the history of population trends. Rapid growth is a comparatively recent phenomenon. Looking back at the 8,000 years of demographic history, we find that populations have been virtually stable or growing very slightly for most of human history. For most of our ancestors, life was hard, often nasty, and very short. There was high fertility in most places, but this was usually balanced by high mortality. For most of human history, it was seldom the case that one in ten persons would live past forty, while infancy and childhood were especially risky periods. Often, societies were in clear danger of extinction because death rates could exceed their birthrates. Thus, the population problem throughout most of history was how to prevent extinction of the human race. This pattern is important to notice. Not only does it put the current problems of demographic growth into a historical perspective, but it suggests that the cause of rapid increase in population in recent years is not a sudden enthusiasm for more children, but an improvement in the conditions that traditionally have caused high mortality. Demographic history can be divided into two major periods: a time of long, slow growth which extended from about 8000 B.C. till approximately 1650 A.D. In the first period of some 9,600 years, the population increased from some 8 million to 500 million in 1650. Between 1650 and 1975, the population has increased from 500 million to more than 4 billion. And the population reached 6.2 billion throughout the world by the year 2000, One way to appreciate this dramatic difference in such abstract numbers is to reduce the time frame to something that is more manageable. Between 8000 B.C. and 1650, an average of only 50,000 persons was being added annually to the world's population, At present, this number is added every six hours. The increase is about 800000,000 persons annually.
Question: Which of the following demographic growth patterns is most similar to the long thin powder fuse?
Options: (A) A slow growth for a long time and then a period of rapid, dramatic increase. (B) Too many people on earth and a few rapid increases in the number added each year. (C) A virtually stable or slightly decreasing period and then a sudden explosion of population. (D) A long period when death rates exceed birthrates and then a short period with higher fertility and lower mortality.
Asnwer: A
[EX A]: Yes

[EX Q]: Article: Scientists have exactly discovered the set of brain cells involved in making risky decisions, and have been able to control them in rats using targeted light. By changing the activity of the cells they were able to change the behaviour of risk-taking rats to avoid risk, hinting the approach could in future be used to treat people with impulse control problems. Risk-taking is a key part of survival, knowing when to take a chance could pay off--such as moving to a new area to look for food when pickings are slim. While all animals need an element of risk, the preference towards it varies between individuals. Researchers found this variation, which determines how risk-averse an individual is, is regulated by brain cells in a region of the brain called the nucleus accumbens. This cluster of neurons releases the neurotransmitter dopamine, which regulates the brain's reward and pleasure centres. Previous studies have shown that in patients with Parkinson's disease, taking medication which blocks specific dopamine receptors (DR2) leads to increased gambling behaviour and risk taking behaviour. In studies with rats, researchers were able to use a technique called optogenetics --which uses light sensitive proteins to change the activity of cells--to modify cells with DR2 in the nucleus accumbens. Rats were trained to choose one of two levers, offering them a choice between a "safe" or "risky" choice. The safe option resulted in a small, but consistent amount of a sugar water treat. But the risky choice consistently delivered smaller amounts of sugar water, with the occasional large pay off--essentially encouraging the animals to gamble for a bigger prize. Around two-thirds of the animals weren't keen on risk, opting for the safe option, but the remaining third were risk-seekers. Brain scans of the animals showed that those with low levels of DR2 consistently went for the gamble. But using pulses of light to stimulate the DR2 cells and improve their activity could cause the risk-takers to play it safe and opt for the guaranteed but less rewarding option. Once the light-pulses stopped, the risk-takers returned to their gambling strategy. In the _ , stimulating the same cells had little to no effect. Professor Karl Deisseroth, of Stanford University in California, said: "Humans and rats have similar brain structures involved."And we found a drug known to increase risk preference in people had the same effect on the rats. So every indication is that these findings are relevant to humans. "Risky behavior has its moments where it' s valuable. As a species, we wouldn't have come as far as we have without it."
Question: The variation in people's preference towards risks is directly regulated by _ .
Options: (A) nucleus accumbens (B) light sensitive proteins (C) neurons (D) dopamine
Asnwer: D
[EX A]:
Yes