6 . I spent time with some elders during my grandmother's five-year stay in the nursing home. I knew what it was like for them without any_________. So sad. They just kept loving each other and being kind.

One day, I saw a man_________on a couch in the hall who was frequently lying with his head on the sidearm. Earlier he had been trying to push Jean, who couldn't_________ far alone in her wheelchair, with his head, from his wheelchair. Obviously, it was quite difficult for him and it was also a_________for Jean.

I asked if they would like me to push Jean. Jean said with_________, “Yes, please!” and the man smiled a toothless “thank you”. I thanked him for his_________and pushed Jean back to her room.

Now, this same man was on his own and as I got_________, I realized he had only one_________and the one he did have was dry and full with rashes (疹子); he kept scratching (抓) it. I had a lotion (涂剂) in my bag that seemed to made him feel better. I even found myself________thing to do. He didn't speak English but spoke to me in his home language — Vietnamese — and tears started to come gently down his face. I____________his tears with tissues and patted him on his shoulder to__________him. He kept talking and looking at me as if I understood him. I nodded and listened.

We didn't____________each other and weren't blood-related and yet, in that moment, we shared a____________that went beyond blood-heart to heart. When I see him again, chances are that he won't recognize me-but I will remember him forever. And, every time my heart extends, it is______________.

7 . I walked around to the side of a puddle along the path covered by water and mud. I was suddenly attacked! Yet I did ______ , for it was so unpredictable. I stepped back and my attacker ______ attacking me. Instead, he flied in the air with its graceful wings in front of me. If I had been hurt, I wouldn’t have found it amusing but I was unhurt, it was ______ and I was laughing. After all, I was being attacked by a butterfly!

I took a step forward, and my attacker rushed me again. He pushed and ______ me in the chest with his head and body over and over again with all his might. It’s just not everyday that one is ______ by a butterfly, so I stopped to find out the ______ . My attacker moved back as well to ______ on the ground. That’s when I discovered why my attacker was ______ me only moments earlier. His mate beside the puddle where he landed was dying.

Sitting close beside her, he opened and closed his wings as if to fan her. I could only admire the love and courage of that butterfly in his ______ for his mate, even though she was ______   dying and obviously I was so large. He did so just to give her those extra few ______ moments of life. Now I knew why and what he was ______   . I couldn’t do anything other than reward him by changing my ______ to the more difficult side of the puddle. He had truly ______ those moments to be with her, undisturbed. I cleaned the mud from my boots and left.

Since then, I’ve always tried to remember the courage of that butterfly ______ I see huge barriers facing me. I always use it as an inspiration to remind myself that good things are worth striving for.

8 . Why don’t we have eyes in the back of our heads? There are at least two reasons. Eyes are biologically expensive things to make and rear view (后视) eyes don't fit well into the human evolution (进化).

Even animals, such as rabbits, whose main survival advantage is rear vision, have only the side eyes. Rear vision is not so important. There are other species that have evolved this ability by moving the position of their eyes relative to the rest of their head. Many birds have their eyes positioned towards the side of their head, allowing them a very wide angle of vision and, in the case of some birds such as the woodcock, they are positioned so they can actually achieve 360- degree vision. It is also obvious that spiders, which tend to have many eyes, only have them facing forwards.

Humans, and probably some other animals, do have another adapted sense to make it up. Many experiments showed that sounds behind the head were noticed by a listener more than sounds to the front, especially if a listener was in a dark room. So, our ears can make up for the lack of rear-facing vision. You can look at it another way. Rear vision is useful only if the potential threat is visible. During human evolution, that was most often not the case.

Finally, there is often more than one potential “solution” to a given problem. In many species, the answer to maintaining 360 degree awareness of surrounding danger is to rely on many eyes. Social behavior is common in the animal kingdom and one reason for this is that there is safety in numbers. You might be looking the wrong way when a tiger approaches, but if your teammates raise the alarm this is as effective as having eyes in the back of your head.

9 . Does solving a math problem give you a headache?Do you feel nervous in a math exam? For most students, math can be tough but scientists have proved that math problems can actually cause physical pain.

Scientists came to this conclusion with an in-depth experiment, which was published in the Public Library of Science One journal. They began by finding out how much participants fear math. Those involved were asked a series of questions such as how they feel when they receive a math textbook or when they walk into a math lesson.

Based on their answers, participants were divided into groups. One group was made up of people who were particularly afraid of math and participants in the other group were more comfortable with the subject. Both groups were then given either math tasks or word tasks. When a math task was going to come next, a yellow circle would appear but when a word task was soon to come, a blue square would be shown.

Using a brain-scan machine, scientists noticed that whenever people from Group One saw a yellow circle, their brain would respond in a way similar to when their body is feeling pain. It was like the pain they would feel, for example, if they burnt their hand on a hot stove. But they reacted less strongly when they knew that they would be faced with a word task. However, scientists saw no strong brain response from people in the second group.

Math can be difficult, and for those with high levels of mathematics-anxiety (HMA), math is associated with tension, and fear. “The higher a person’s anxiety of a math task, the more he activated brain regions associated with threat detection, and the experience of pain.” said Lyons, leader of the study.

More interestingly, the brain activity disappeared when participants actually started dealing with the math tasks. “This means that it’s not that math itself hurts; rather, the anticipation of math is painful,” Lyons said.

Based on the study, scientists suggested that things could be done to help students move past their fear of math, which might mean they perform better in tests.

2.只允许修改10处，多者（从第11处起）不计分。

Some international students visited our school in last week. To help them better understand our tea-drinking culture, I take them to the tea room in our school but introduced the history of tea-making and tea culture to them. All the international students was quite interested in my introduction. Then I showed them what to make tea. I sat at a table, slowly explain every step of the process while making tea. All of them were so amazing that they couldn’t wait have a try themselves. Soon the atmosphere in the tea room became lively and we had a lot of funs practising making tea. In the end, we took a group photo to memorize this forgettable moment.