Ever wonder why sometimes a hug is all you need ? You can't explain it , but there's just something comforting about being in your wife's arms after a rough day or giving mom a hug after a long time apart . A new study says the warm feeling in a hug is more than just skin deep . Researchers from the University of California , Berkeley believe that this loving feeling could have anti-aging benefits . Oxytocin , sometimes referred to as the " love hormone " or the " trust hormone , " is responsible for those indescribable feelings we get when we're bonding with a lover or a loved one . Levels of the hormone drop as we age , and evidence suggests that could be a contributing factor to the _ of our bodies as we age . Muscle loss in particular is one of the major side effects of aging , with our bodies losing up to 5 percent of our muscle mass each decade past our 30s . In the study , published in the journal Nature Communications , researchers injected oxytocin into older mice with muscle damage . The older mice had lower levels of the homeone than younger mice initially . But after nine days , the older mice who were given the hormone healed better than those who did not . In fact , their ability to repair muscle damage was up to 80 percent that of the younger mice . The results were not only fast-acting , but provide hope for future uses of the hormone in a variety of anti-aging capacities . " This is good because it demonstrates that extra oxytocin improves aged tissue stem cells without making muscle stem cells divide uncontrollably , " study co-author Wendy Cousins said in a statement . Previous uses of anti-aging molecules have also been associated with higher cancer risk , but researchers are hopeful that oxytocin can be useful in humans without this risk . In the future , researchers of Berkeley say oxytocin could be used to fight other age-related health issues by improving bone health and even being used as an alternative to hormone replacement therapy . Now go out and give someone a hug . What can be learned from the research ? A) All the older mice healed faster in the research . B) Older mice healed better than younger ones after 9 days . C) Extra oxytocin in older mice controlled muscle cell division . D) Mice with oxytocin injection improved the ability to repair muscle damage .
D


(Question)
On a cold winter Sunday, the little man came up to me as I was about to enter the telephone box and asked me whether I had a match. "I'm sorry,"I said."I don't smoke, so I haven't any. You'd better ask someone else." He looked rather disappointed, hesitated, and then turned away. I watched him walk slowly down the street before I picked up the telephone directory to look up the number I meant to dial. I'm not used to a public call box, so, at my first attempt to get through, the warning pips( ) had stopped before I realized I had to insert a coin. When I was at last able to speak, I was told that the person whom I urgently wanted to give a message to had just gone out. Swearing slightly under my breath, I got out of the box and came face to face with the little man. As he raised his hat again, I could see he was quite bald, and a thin line, resembling a dueling( ) scar, crossed one cheek. "Excuse my troubling you again." he said nervously."May I walk along with you a little way? I must tell you the truth. I need help desperately. " He had an unusually deep voice which suggested a strange combination of shyness and self-confidence. I was conscious of a fairly strong foreign accent and I wondered what country he had actually come from. I said that I had to catch a train in twenty minutes' time, but that he might accompany me to the station. "I'm going to shock you,"he said suddenly, after a moment's silence."Can you lend me five pounds? I have no money at all."I have come across many strange characters during my life and plenty of people have tried to borrow money from me. I have generally managed to avoid lending them any. But, perhaps because of the very directness of his appeal, I somehow had the impression that his need might be desperately urgent. "I'm sorry," I replied,"I'm afraid I can't lend you anything, as I'm not in the habit of carrying much money about with me. Don't you think the police might be the best people to ask for help?" He hesitated,"I dare not go to the police," he said quietly. "If I do... The main reason why the author hadn't lent the little man any money was that   _  . A) he never lent others any money B) he happened not to carry any money C) he did not trust the little man D) he was afraid he mightn't get it back
(Answer)
C


Most Chinese people these days know what it is like to have an "English teacher", since almost all pupils study English from their third year. Usually that first English teacher will be a young and lovely lady in primary school. But my first English teacher is _ . Looking back, I can see that, when I was only a little girl, he created an English environment by providing me with flashcards,fun English- language toys and even dolls which can sing English songs! My interest in English had certainly been awakened   when I began to learn English at school. Just imagine, he went a step further and asked me to learn New Concept English by myself! I was puzzled and even angry. I could not understand why a father could be so strict with his little girl. All the same, he never gave up and he gently insisted that I follow through with his idea. At first, I read stories with tears and I actually hated them because they were too difficult for me. In the end, I came to love the funny stories and, to be honest, my father was always there with a helping hand. I am sure that my English would never have got so far without his support. And that's why my father is not only my first English teacher but also my lifelong teacher. He is one who awoke my interest, and who gave me much confidence . What would be the best title for the passage? A) How I learned English at school B) My father---my first and lifelong English teacher C) The relationship between my father and me D) I've made progress in English learning

B