专题限时训练(二十五)科普知识型阅读理解(一)(限时：25分钟)(一)Its a common belief that over time, pet owners start to look like their animals, and vice versa. Now comes the terrifying news that cats look up to their owners as role models and copy their behaviour.Next time you reach for your fridge, think twice. If your kitty is watching, she is likely to overeat as well.What is your cats IQ?In a new study from the University of Messina, it turns out that indoor cats who live closely to their owners “mirror” the lives of their caregivers. They sleep at the same time, eat at the same time, and can even become more or less social depending on the behaviour of their owners.“Cats are intelligent animals with a long memory, ”Jane Brunt, the executive director of the Catalyst Council, told Discovery News. “They watch and learn from us, noting the patterns of our actions, knowing where their food is kept and what time to expect to be fed, how to open the cupboard door thats been improperly closed, and where their feeding and toileting areas are.”Because cats copy our habits, if you spend a lot of time raiding(搜刮)the fridge, your cat will return to its food bowl for that midnight snack, too. According to the study, this explains why “human and cat overweight rates often seem to match”So, if you feel guilty about leaving your precious kitty at home while you go to work, now you can feel even worse：you are making your cat fat!Theres no word if drinking green tea and making sure you go to yoga will benefit your cat, but based on the study, it sounds like sticking to a healthy eating and sleeping schedule is best for both of you.Theres a lot we can learn from our cats in return. “When they sit on our laps softly purring with rhythmic breathing and halfclosed eyes, the sense of peace and calm that comes over us is like a private lesson in inner meditation，”Brunt said. Sure. But cats dont have to sit in rush hour traffic for an hour a day or worry about their inlaws. Theyre probably pretty good at remaining calm.So, according to science, even though we assume that cats are not close to us all these years, it turns out they are in fact learning from us and looking up to us. Scary, huh?1According to the passage, which of the following is NOT true?ACats can copy humans schedule.BHumans can learn from cats in some way.CCats are smart and have a long memory.DGreen tea and yoga can benefit cats.2What does the underlined word “this” in Paragraph 5 refer to?AHumans keeping searching the fridge.BCats going to their owners for food.CCats copying humans habit of looking for food.DHumans leaving cats home while working.3What can we learn from our cats?ATo remain calm.BTo be able to copy.CTo stay proud.DTo look up to friends.4The best title for the passage could be “_”AYour cat can bring you pleasureBYou are copying your catCYou can make your cat socialDYour cat is copying your habit(二)Why laughter mattersAlthough most people believe that laughter is one of the natures great treatments for a whole range of mental and physical diseases, it is still a serious scientific subject that researchers are trying to figure out.“Laughter above all else is a social thing，” says Baltimore neuroscientist, Robert Provine, who has studied laughter for decades. “All laughter groups laugh hahaha basically the same way. Whether you speak Mandarin, French or English, everyone will understand laughter. There is a pattern generator(发生器) in our brain that produces this sound.”Laughing is our first way of communicating. Babies laugh long before they speak. No one teaches them how to laugh. They just do. People may laugh at a prank(恶作剧) on April Fools Day. But surprisingly, only 10 to 15 percent of laughter is the result of someone making a joke. Laughter is mostly about social responses rather than to a joke. Deaf people laugh without hearing and people on cell phones laugh without seeing, showing that laughter isnt dependent on single sense but on social interactions.And laughter is not just a thing of people. Chimps tickle(挠痒) each other and even laugh when another chimp pretends to tickle them.Jaak Panksepp, a Bowling Green University Psychology professor, studies rats that laugh when he tickles them. It turns out rats love to be tickledthey return again and again to the hands of researchers tickling them.By studying rats, scientists can figure out whats going on in the brain during laughter. Northwestern University biomedical engineering professor, Jeffrey Burgdorf has found that laughter in rats produces a chemical that acts as an antidepressant(抗抑郁药). He thinks the same thing probably happens in humans, too. This would give doctors a new chemical target to develop drugs that can fight depression.Even so, laughter itself has not been proved to be the best medicine, experts say. Margaret Stuber, a professor at University of