Article: I was driving home one evening at about 5, caught in traffic, and the car started to die-- I hardly managed to get into a gas station, glad only that I would have a warm spot to wait for the tow truck . Before I could make the call, I saw a woman walking out of the " Quickie Mart" building, then suddenly she slipped on some ice and fell down, so I got out to see if she was okay. When I got there, it looked like she had been overcome by weep than that she had fallen; she was a young woman who looked _ with dark circles under her eyes. She dropped something as I helped her up, and I picked it up and gave it to her. It was a coin. At that moment, everything came into focus for me: the crying woman, the ancient Suburban packed full of stuff and three kids in the back, and the gas pump reading $4.95. I asked her if she was okay and if she needed help, and she just kept saying "I don't want my kids to see me crying," so we stood at the other side of the pump from her car. She said she was driving to California for Christmas and that things were very hard for her right now. I took out my credit card and swiped it through the card reader on the pump so that she could fill up her car completely, and I bought two big bags of food for her kids in the car who attacked it like wolves. While it was fueling, she asked, "So, are you an angel or something?" I said, "At this time of year, angels are really busy, so sometimes God uses common people." It was unbelievable to be part of someone else's miracle. And of course, you guessed it, when I got in my car it started right away and got me home with no problem. Sometimes, angels fly close enough to you that you can hear the flutter of their wings. Question: According to the passage, we can say that the author _ . Yes or no, is the answer "was a kind person"?
Yes

Article: Recordings of angry bees are enough to send big, tough African elephants running away, a new study says. Beehives -either recorded or real-may even prevent elephants from damaging farmer's crops. In 2002, scientist Lucy King and her team found that elephants avoid certain trees with bees living in them. Today, Lucy wants to see if African honeybees might discourage elephants from eating crops. But before she asked farmer to go to the trouble of setting up beehives on their farms, she needed to find out if the bees would scare elephants away. Lucy found a wild beehive inside a tree in northern Kenya and set up a recorder. Then she threw a stone into the beehive, which burst into life. Lucy and her assistant hid in their car until the angry bees had calmed down. Next,Lucy searched out elephant families in Samburu National Reserve in northern Kenya and put a speaker in a close to each family. From a distance, Lucy switched on the pre-recorded sound of angry bees while at the same time recording the elephants with a video camera. Half the elephant groups left the area within ten seconds. Out of a total of 17 groups, only one group ignored the sound of the angry bees. Lucy reported that all the young elephants immediately ran to their mothers to hide under them. When Lucy Played the sound of a waterfall instead of the angry bees to many of the same elephant families, the animals were undisturbed. Even after four minutes, most of the groups stayed in one place. Lucy is now studying whether the elephants will continue to avoid the sound of angry bees after hearing it several times. She hasn't tested enough groups yet to know, but her initial results were promising enough to begin trials with farmers. She has now begun placing speakers in the fields to see if elephants are frightened away. Question: We know from the passage that elephants may be frightened of _ . Yes or no, is the answer "angry bees"?
Yes

Article: If you are looking for a creative solution to a piece of work or a school assignment,don't lock yourself up in a quiet room. A new study suggests that moderate background noise is a better spur to creative thinking than the sound of silence,Time magazine reported. A paper published in the Journal of Consumer Research says that the perfect working environment should buzz with a little noise. Researchers found that test subjects were at their most creative when background noise was measured at 70 decibels,the level one might find in a busy coffee shop. A nearly silent environment(50 decibels)was too quiet. Turning up the volume to 85 decibels (a jackhammer tearing up the pavement outside your building) was counterproductive-the noise became a distraction. The researchers asked 65 students at the University of British Columbia,Canada,to perform various creative tasks while noises recorded at a roadside restaurant were played in the background. In one experiment,scientists asked participants to brainstorm ideas for a new type of mattress . Test subjects had the most successful discussions when the noise in the background was noticeable but not too loud. While a quiet environment may make it easier to read a book. the authors of the study say that moderate background noise creates just enough of a distraction to force people to think more imaginatively, without breaking their focus so completely that they can't think at all. Should we all head for Starbucks to get creative? Not necessarily. Researchers found limited work time surrounded by the low-level noise of a coffeehouse is what really stimulates creativity. Equally, working in a care environment isn't good for everybody. The productivity boost was most obvious among those who were naturally creative to begin with. Question: Why is moderate background noise good for creativity? Yes or no, is the answer "It pushes people to use their imagination but doesn't reach a level that disturbs them."?
No