instruction:
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.
question:
Article: Most of the time, the ground feels solid beneath our feet. That's comforting. But it's also misleading because there's actually a lot going on underground. Masses of land (called plates) slip, slide, and bump against each other, slowly changing the shape of continents and oceans over millions and billions of years. Scientists know that Earth formed about 4. 5 billion years ago. They also know that our planet was hot at first. As it cooled, its outermost layer, called the crust , eventually formed moving plates. Exactly when this shift happened, however, is an open question. Now, an international group of researchers has an answer. They've found new evidence suggesting that Earth's crust started shifting at least 3.8 billion years ago. The new estimate is l. 3 billion years earlier than previous ones. Not long before 3. 8 billion years ago, lots of small planets were hitting Earth, keeping its crust in a hot, melting state. After the hard crust formed, much of it sank at various times into the planet's hot insides. There, it melted before returning to the surface. In some places, however, the crust never sank. One of the oldest such places is in Greenland, in an area called the Isua supracrustal belt. The rocky crust there is between 3. 7 and 3. 8 billion years old. The belt was once part of the seafloor, but now it is exposed to air. The researchers recently took a close look at the Isua supracrustal belt. They noticed long, parallel cracks in the rock that have been filled in with a type of volcanic rock. To explain this structure, the scientists propose that tension in the crust caused the seafloor to crack open long ago. Hot, liquid rock oozed from deep inside Earth to fill the cracks. Finally, the whole area cooled, forming what we see today. That explanation, plus chemical clues inside the rock, suggests that the Isua supracrustal belt was once part of plate under the ocean, beginning around 3.8 billion years ago. "It's a fantastic case of solving a jigsaw puzzle ,"says one of the researchers. He notes that the puzzle was "a very difficult one because these rocks are all very old and have been badly ruined".
Question: What can we infer from the text?
Options: (A) The shapes of continents and oceans changed slowly. (B) The Earth's crust started shifting l.3 billion years ago. (C) The crust began to shift when the Earth was hot. (D) The hit from small planets made the Earth cool.
Asnwer: B
answer:
No

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Article: A lot of people these days believe Valentine's Day is a made-up holiday designed to promote the sale of greeting cards and gifts. And while there may be some Arguments for that, there is a mysterious story as to why February 14th has become known today as "Valentine's Day." Our story dates back centuries ago, to the Roman Empire, and the martyrdom of two or three Christians named Valentine. At least one of those Valentines is thought to have been killed on February 14th. Legend has it that this particular Valentine wais killed by a Roman emperor because he secretly presided over the marriages of young men and women, against the wishes of the Emperor, who wanted only single men to fight in his army. However, there is no historical evidence to back this up. But what is widely known is that the love-element to Valentine's Day can be first traced to the poetry of Geoffrey Chaucer. Chaucer wrote a poem in 1382 to mark the anniversary of his King's engagement, and scribed a line -- "For this was Saint Valentine's Day, when every bird cometh there to choose his male." From this point, on Valentine's Day became intertwined with love. But for the pessimists out there who see Valentine's Day as a commercial idea, there is some historical evidence to back this up as well! The true popularization of Valentine's Day can be traced to late 18th century England, when a British publishing company first started selling paper Valentine's Day cards with tender words on them. They became so popular that by the middle of the 19th century, some 1.3 billion British pounds a year were being spent on Valentine's Day gifts.
Question: What is this text mainly about?
Options: (A) What Valentine's Day means. (B) How Valentine's Day came about/ (C) Why Valentine's Day is so popular. (D) When people created Valentine's Day.
Asnwer: A
answer:
No

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Article: It has been argued that an infant under three who is cared for outside the home may suffer because of the separation from his parents.The British psychoanalyst John Bowlby believes that separation from the parents during the sensitive "attachment" period from birth to three may scar a child's personality and incline to emotional problems in later life.Some people have drawn the conclusion from Bowlby's work that children should not be sent to day care before the age of three, and many people do believe this.But there are also arguments against such a strong conclusion. Firstly, anthropologists point out that the hidden love between children and parents found in modem societies does not usually exist in traditional societies.For example, we saw earlier that among the Ngonis the father and mother of a child did not raise their infant alone.But traditional societies are so different from modern societies that comparisons based on just one factor are hard to understand. Secondly, common sense tells us that day care would not be so widespread today if parents and caretakers found that children had problems with it.But Bowlby's analysis raises the possibility that early day care has delayed effects.The possibility that such care might lead to more mental illness or crime 15 or 20 years later can only be noticed by the use of statistics.Statistical studies of this kind have not yet been carried out, and even if they were, the results would be certain to be complicated and controversial. Thirdly, in the last decade, there have been a number of careful American studies of children in day care, and they have reported that day care had a neutral of slightly positive effect on children's development.But tests that have had to be used to measure this development are not widely enough accepted to settle the issue.
Question: This passage is mainly talking about _ .
Options: (A) children's personality (B) advantages of infants' early care (C) infants' education (D) negative effect of infant school
Asnwer: C
answer:
Yes