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Article: Have you ever noticed how much the number twelve is used? A ruler that is a foot long has twelve inches. A yardstick has three times twelves inches, or thirty-six inches. On a canlender you will see twelve months in each year. A clock face is numbered from one to twelve for the hours. The time span from noon to midnight is twelve hours; from midnight to noon there are twelve more hours. Each day is two times twelve, or twenty-four hours long. We buy eggs by the dozen, which means twelve at once. Sometimes we buy other things by the dozen. The stores sell different things by the dozen. In a store you may have seen a dozen pencils held together by a paper wrapping or a dozen oranges in a sack. Stores also buy things in lots of twelve dozens, or by the gross(,12 ) . One gross consists of twelve dozens, or one hundred and forty-four items. Question: An outside cover is a _ . Yes or no, is the answer "wrapping"?
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No

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Article: Everything that humans hear is in the form of waves. Just as the eye sees light waves in the form of color1s, the ear hears sound waves in the form of noises. The ear and the eye turn these different waves into signals that the brain can make sense of. The ears and brain have an amazing ability to recognize particular sounds. For example, a mother often can tell when her baby is crying even if there are other crying babies in the same room. This is because the sound of her baby's cry has special meaning to her and the brain has recorded its importance. The ability to recognize sounds improves with experiences. As the brain receives information about sounds from day to day, it stores the information in its memory. When the brain hears new sounds, it gives meaning to them based on the information already in the memory. This is why certain words or songs can make a person happy. Often it is not the words or songs themselves that cause this feeling. The sounds are connected to happy memories for that person. Another hearing process controlled by the brain is to decide where a sound is coming from. One ear is usually closer to the source of a sound than the other ear is. Sound waves are stronger when they reach the ear that is closer. They also reach the closer ear first. The brain recognizes these differences and uses them to decide the location of the source of the sound. Question: Why does a person feel happy when they hear some songs? Yes or no, is the answer "Because the certain sounds are connected to happy memories for that person."?
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No

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Article: "A rolling stone gathers no moss ," but there is one living animal that does gather moss -- the three-toed sloth of South America. This slowest-moving member of the animal kingdom is so inactive that moss actually gathers on its body and turns it green -- strange as it seems! Most of the sloth's life is spent motionless, hanging upside down from a limb . And that is the way its hair grows. Long and coarse, the strands from receptacles for the damp jungle algae turn the brown fur a mossy green. Actually this moss helps the animal survive because it serves as a perfect camouflage against the leafy trees and hides the sloth from the jungle's swift-moving hunters. The sloth would have little chance of survival on the ground. With long, curved claws hooded over the limb of a leafy tree, it spends the long hot hours during the day drowsing and eating. Inch by inch, it strips the leafy limbs bare and crawls slowly down the trunk to find a new dining spot, but only at night. In addition to looking rather like a vegetable, the sloth is a strict vegetarian. Running out of its favorite leaf is about the only thing that will make a sloth move. Then its appetite may even force the animal into swimming a stream to reach a succulent . It will also force it into fighting to keep the tree all to itself. The sloth is lazy and prefers to be alone, but it will tolerate its own s! Question: The author's purpose in writing the passage is _ . Yes or no, is the answer "to introduce a particular animal to the common reader"?
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No