instruction:
In this task, you're given an article, a question which often contains a blank and four options (associated with "A", "B", "C", "D"). Your task is to find the correct answer (from the given options) for the question from the given article and return one of the options from "A", "B", "C", and "D". Do not generate anything else apart from one of the following characters: "A", "B", "C", "D". There is only one correct answer for each question.
question:
Article: The most important holiday in spring, especially for Christians , is Easter. This Christian holiday is not on the same date every year, but it's always on a Sunday. It can be any Sunday between March 22 and April 25. Many people celebrate Easter by buying new clothes. Children celebrate by hunting for color1ed eggs that their parents have hidden around the house. People also give Easter baskets filled with candy and other goodies to one another to celebrate the day. But the holiday is more than new clothes and good things to eat. On Easter, many people go to church to celebrate Jesus' resurrection from the dead. Most people color1 them. Some people hide them. Others just eat them. But no matter what one does with Easter eggs, they are an important Easter tradition throughout the Western world. People from many different cultures celebrate Easter. In both America and Belgium, children look for Easter eggs hidden on lawns and in bushes. In America, children believe the eggs are hidden by the Easter bunny . But in Belgium, the hidden eggs are supposed to have fallen from church bells. In Bulgaria, red Easter eggs are lucky in churches; Bulgarian families also hit these Easter eggs together to see whose is the strongest. The winner looks forward to good fortune that year. Still dozens of other Easter traditions exist. In parts of Austria, for example, children sing from door to door and are rewarded with color1ful eggs.
Question: Easter comes _ .
Options: (A) on the same date every year (B) on Sunday on March 22 (C) on Sunday on April 25 (D) on a Sunday between March 22 and April 25
answer:
D

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Article: As part of an effort to improve treatments for life-threatening illnesses, a team of scientists have created rabbits that glow in the dark. The efforts have produced two rabbits out of a litter of eight that went from being a normal, soft white to glowing green in the dark. The rabbits were born at the University of Istanbul as part of the cooperation between scientists from universities in Turkey and Hawaii. The rabbits glow to show that a genetic operation technique can work efficiently. "The green is not important at all--it's just a marker to show the experiment can be done successfully," said University of Hawaii associate professor, Stefan Moisyadi. To produce the glowing effect, researchers injected jellyfish DNA into a mother rabbit's embryos. Then those embryos were put into the mother. Similar experiments have resulted in glowing cockroaches and cats. Eventually, the researchers hope the technique can lead to new ways to produce medicines, Moisyadi said. "The final goal is to develop animals that are able to produce beneficial molecules in their milk that can be cheaply extracted , especially in countries that cannot afford big factories that make drugs, which usually cost US$1bn to build. Then they will be able to produce their own protein-based medication in animals," Moisyadi said. The rabbits are expected to live as long as non-glowing rabbits, but Moisyadi said he understands people can object to this kind of experimentation involving live animals. "To the people against, I say: think, what are the benefits and what is the harm?" Moisyadi said. "And if the benefits outweigh the harm, let's go with the benefits." Moisyadi started developing the project in 2006, and researchers are now waiting to see if pregnant sheep produce similar results.
Question: What do we know about the glowing rabbits?
Options: (A) Their fur became green after the experiment. (B) They were chosen from a special species of rabbits. (C) The color1 that they glow isn't of interest to scientists. (D) They live shorter lives than ordinary rabbits.
answer:
C

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Article: It is your sense of smell that quickly tells you there is good food in the kitchen, or your smelly socks need to be washed. But how do we recognize smell? Particular smells turn on certain groups of brain cells , scientists say. When your nose catches a slight smell of something, one of 1,000 different types of odor-receiving cells pick it up. These cells send an electrical signal to a special part of the brain. A group of scientists studied mouse brains using some particular odors like vanilla, apples and fish. They looked at thin slices of each mouse's brain to see which brain cells had been turned on by each odor. The scientists discovered that each odor produces a similar pattern of active cells in different mice. So, a certain combination of cells can tell a mouse that it is smelling vanilla, apples, fish, or any one of the thousands of other smells. Scientists could use studies like this to create a map. It could show which parts of the brain are activated by different smells. Some other scientists, however, say that researchers should also study animals that do not live in a lab, which have spent their lives smelling things in the natural world. With more smelling experience, they might show quite different patterns.
Question: By doing mouse experiments, the scientists _ .
Options: (A) found different types of odor-receiving cells in mice (B) found each smell creates a similar pattern of active cells in different mice (C) showed that different mice have different brain cells (D) proved that a certain cell can tell a mouse what it smells
answer:
B