Read the following article and select the best answer. Article: The day after news broke of a possible revolution in physics ----particles moving faster than light ?a scientist leading the European experiment that made the discovery calmly explained it to a standing-room- only crowd at CERN. The physicist, Dario Auterio, did not try to explain what the results might mean for the laws of physics, let alone the broader world.After an hour of technical talk, he simply said, "Therefore, we present to you today this difference, this unusualness." But what unusualness it may be.From 2009 through 2011, the massive OPERA detector buried in a mountain in Gran Sasso, Italy, recorded subatomic particles called neutrinos ( ) arriving faster than light can move in an empty space.The neutrinos generated at CERN are hardly detectably early.If confirmed, the finding would throw more than a century of physics into disorder. "If it's correct, it's _ ." said Rob Plunkett, a scientist at Fermilab, the Department of Energy physics laboratory in Illinois."We'd be looking at a whole new set of rules" for how the universe works.Those rules would bend, or possibly break, Albert Einstein's special theory of relativity, published in 1905.Basical at the time, the theory tied together space and time, matter and energy, and set a hard limit for the speed of light, later measured to be about 186, 000 miles per second. No experiment in 106 years had broken that speed limit.Physicists expect strict study to follow, which OPERA and CERN scientists welcomed. Fermilab operates a similar experiment, called MINOS, that shoots neutrinos from Illinois to an underground detector in Minnesota.In 2007, MINOS discovered a just detectable amount of faster than-light neutrinos, but the permissible difference of error was too big to "mention" , Plunkett said. Fermilab scientists will reanalyze their data, which will take six to eight months.In 2013, the MINOS detector, now offline, will restart after an upgrade.It could then offer confirmation of the results. Question: The best title for the passage may be _ . - Are the laws of physics in disorder? - Particles faster than light; Revolution or mistake? - Faster than light measurement: right or wrong? - Is Einstein's theory still right today?
Particles faster than light; Revolution or mistake?

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Read the following article and select the best answer. Article: Fish have different personalities which change as they experience life's highs and lows.according to British biologists. Researchers identified different"personalities" in their fish by observing the boldness or shyness of individuals,according to The Nature.Like people,some fish are very confident in the face of novelty or conflict;while others are silent and fear. The scientists selected particularly bold and shy rainbow trout,and tested whether they changed their outlook depending on what life threw at them.They arranged some fish to fight and others to watch to see how both the participants and observers responded to victories and defeats.Winning or losing a fight,or even watching fellow fish overcome the difficulties influenced the future behavior of the _ studied in the lab. The researchers made fish compete with much larger or smaller opponents.to ensure that they would win or lose their fights.These bold fish that won their fights tended to be even bolder when later presented with a novel food item;losing their fight caused them to be much more cautious. Fish also learn by watching others.Bold fish watching a shy fish exploring a mystery object were much more nervous when later given a novelty item for themselves. Predictably,shy fish that won a fight also gained more confidence,but surprisingly,shy fish that lost their fights also grew bolder when exploring strange new food,Sneddon said,adding that this could be due to what she calls a"desperado effect" . The new research suggests that animals can gradually adapt their personalities.The results echo the effects that life experience can have on human. Question: What's the main idea of the text?' - Fish have stress in the fierce fights. - Fish care about winning or losing a fight. - Fish have adaptable personalities. - Fish can learn a lot by watching others.
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Fish have adaptable personalities.

Read the following article and select the best answer. Article: My friend got married. His mother carried two bags of cotton from the countryside by bus and train to his city. After arriving at the city, there was still a long way to his house without any bus passing by the house. His mother walked to his home breathlessly for 40 minutes without taking a taxi in order to save money. My friend felt bitter as well as funny at his mother's deeds. He pointed to the cashmere and silk quilts and said, "So long as you have money, you can buy anything in the supermarket. There is no need for you to carry so much cotton here in such a long way." But his mother insisted and said, "The cotton of this year is light and warmth-keeping. Have a try and you will know!" Maybe every parent is the same, caring for their children with stubborn love without caring about whether they know or like it. This early spring, I went to visit my grandmother. We had dry beans stew , eggplant salad bar, sauce radish for our dinner, all of which were dried by my grandmother last autumn and tasted wonderful. I loved the dishes to my heart's content and could not help praising them again and again. After a few days, my grandmother, who seldom visited us, came to my home and unpacked her bag, smilingly taking out bags of dried eggplants, dried beans and dried vegetable. She told me that I left so hastily last time that she forgot to give me some of these foods, so she took this chance to bring me what I liked. I was speechless at that time. Due to my casual complimentary her food, my grandmother, a nearly 70-year-old lady, by taking three buses from the west of the city to the east, came to my home with the food I liked. But she was bus-sick in life and even seldom went strolling in the street. My pretty girlfriend had a failed marriage in the past. After divorce, her parents shed the deepest protection and care to her by helping her attend to the child and offering financial aids. Her parents' love made her pull herself together and forgot the man who had hurt her before. Nonetheless, her father, an... Question: What does the author want to tell us? - The love from our parents is real and deep though sometimes it doesn't appear so. - The love from our parents is awkward sometimes, which is rather annoying. - Children should appreciate parents' love because their life is so hard. - The world is changing so the love of parents should change too.
The love from our parents is real and deep though sometimes it doesn't appear so.