Question: Read the following article and answer the question. Article: Most people know precious gemstones by their appearances. An emerald flashes deep green, a ruby seems to hold a red fire inside, and a diamond shines like a star. It's more difficult to tell where the gem was mined, since a diamond from Australia or Arkansas may appear the same to one from the Democratic Republic of the Congo. However, recently, a team of scientists has found a way to identify a gemstone's origin. Beneath the surface of a gemstone, on the tiny level of atoms and molecules , lie clues to its origin. At this year's meeting of the Geological Society of America in Minneapolis, Catherine McManus reported on a technique that uses lasers to clarify these clues and identify a stone's homeland. McManus directs scientific research at Materialytics, in Killeen, Texas. The company is developing the technique. "With enough data, we could identify which country, which mining place, even the individual mine a gemstone comes from," McManus told Science News. Some gemstones, including many diamonds, come from war-torn countries. Sales of those "blood minerals" may encourage violent civil wars where innocent people are injured or killed. In an effort to reduce the trade in blood minerals, the U.S. government passed law in July 2010 that requires companies that sell gemstones to determine the origins of their stones. To figure out where gemstones come from, McManus and her team focus a powerful laser on a small sample of the gemstone. The technique is called laser-induced breakdown spectroscopy. Just as heat can turn ice into water or water into steam, energy from the laser changes the state of matter of the stone. The laser changes a miniscule part of the gemstone into plasma, a gas state of matter in which tiny particles called electrons separate from atoms. The plasma, which is superhot, produces a light pattern. (The science of analyzing this kind of light pattern is called spectroscopy.) Different elements produce different patterns, but McManus and her team say that gemstones from the same area... Question: Which of the following facts most probably helps McManus and her team in identifying the origin of stones? Answer:
OPTIONS:
- Heat can turn ice into water or water into steam.
- Gemstones from the same area produce similar light patterns.
- Laser can changes a miniscule part of the gemstone into plasma.
- Materialytics has already collected patterns from thousands of gemstones.
Answer: Gemstones from the same area produce similar light patterns.

input with options: Read the following article and answer the question. Article: Twenty years ago, when I was only fifteen, I had to leave school to work in a second-hand car shop to support my family. My work was to fix holes in leather, cigarette burns in seats, and repair windshields . Every day I worked hard. And I was always optimistic, positive and kind, and tried my best to be angry with anybody. One day while I was repairing the windshield of an old car, Cindy, the shop owner, who was always very rude to me and other workers, came and said it was broken by me. She asked me to pay for it. I have always been an honest person and I felt very embarrassed. And what is worse she blamed me in front of all the other workers. Just at that time, one of my colleagues came and said the windshield was broken because of a falling branch of a tree standing in the yard. However, instead of being angry at being looked upon as someone that was not honest or had no integrity , I went to a flower shop and bought some red roses and had them put in a nice basket that afternoon. I picked out a card and stated that I was sorry for the misunderstanding and that I did not ever have the intention of making her angry. And then I sent them to Cindy. The next morning, I walked into Cindy's office like I did every day with my list of used cars that needed some attention before they were sold and said hello to her with my usual happy and sincere attitude. She gave me a big smile and said, "Thank you for your flowers." Cindy began to change from that day, perhaps because of this small act of kindness. She was always very kind, and would always have a big smile when we walked into her office. I guess people can change with a little bit of kindness! Question: What can we learn from the passage? Answer:
OPTIONS:
- Seek the truth from facts.
- Actions speak louder than words.
- An eye for an eye and a tooth for a tooth.
- A small act of kindness can change a person.
output: A small act of kindness can change a person.

Q: Read the following article and answer the question. Article: As a substitute teacher, my daily routine involves driving to a new school almost every day so I'm usually unable to anticipate the day's events, good or bad! On one particular day, I was teaching in a very difficult classroom. I was managing behavior all morning and by lunch time, I knew I needed coffee to even consider surviving the afternoon. So on my lunch break, I drove to a nearbyplaza to get a cup of coffee. Upon returning to the car I realized I had locked my keys and my phone inside! I had about 15 minutes to get back to the school which was a good 4 or 5-minute drive away. I contemplated sprinting back, but it being winter, I thought a nasty fall on ice would only make the situation much worse. So I ran into a McDonald's which was in the same plaza and asked the man at the counter who happened to be the manager to please call me a cab. I briefly explained my situation to him, and I could tell by the look in his eyes, that he empathized. He hurried to the back to use the phone while I paced in the restaurant. I had less than 10 minutes to get back to my school at this point. The manager returned only to tell me that the cab company had put him on hold and then the line got disconnected, and that he was now on hold again, but had not yet been able to request the cab yet. My expression, I assume, began to resemble some combination of hopelessness and fear. Without a thought, he grabbed his coat and offered to drive me to the school. Without hesitation, I followed him into his car and made it back into my classroom with 2 minutes to spare before the bell! Upon arriving at the school, I thanked this man endlessly. His calmdemeanor and kind nature made me think he was probably a wonderful manager to work for, and also a wonderful human being to have on this earth. This experience makes me realize that out of every seemingly hopeless situation, there is the opportunity for acts of kindness totranspire , which can have an unimaginable impact on those who receive them. Question: What happened to the author after he got a cup of coffee? Answer:

OPTIONS:
- He fell on the icy road.
- He realized his keys and phone were locked inside the car.
- His car was broken.
- He lost his keys and phone.

A:
He realized his keys and phone were locked inside the car.