Scientists recently found three animal species living two miles below the surface of the Mediterranean Sea, where the super-salty waters don't have oxygen . They're multicellular , which means their bodies have many cells. They each are as small as a large grain of sand. But they are animals. The most exciting thing about these creatures, say the scientists, is that they obviously don't need oxygen to live. What biologists know about life so far is that only single-celled living things can live in places that have no oxygen, and that multicellular organisms can visit these places, but not live there. These newly found creatures could _ . Finding animals down there was so surprising that the scientists couldn't believe it. At first, "we thought they were dead bodies," Roberto Danovaro, a scientist at the Polytechnic University of Marche in Ancona, Italy, told Science News. To find out whether the animals could actually live there Danovaro and his colleagues brought up more samples from the ocean floor. Studying the animals in the new samples showed that they appeared to be alive. The researchers did more tests, and found that some of the animals had eggs--which suggests they were reproducing . Also in the samples were old skins, suggesting that the animals had lived there long enough to grow. Finally, pictures taken showed that the insides of the animals appear to be adapted to live in an environment that has no oxygen. These clues suggest the animals don't need oxygen, but the evidence is indirect, which means that scientists still have not observed how the animals live without oxygen. This means more studies are needed, but the scientists think they're on the right track. And if they're right, biologists will need to rethink what they know about where animals live. More studies are needed to prove _ . A) where single-celled animals can live B) how the newly found animals live without oxygen C) whether the multicellular creatures can live underwater D) why the super-salty waters have no oxygen
B
When my first wartime Christmas came, I was in basic training in New Jersey and not sure if I would make it home for the holidays. Only on the afternoon of December 23 was the list of men who would have the three-day holiday posted. I was one of the lucky soldiers. It was Christmas Eve when I arrived home, and a little snow had fallen. Mother opened the front door. I could see beyond her, into the corner of the living room where the tree had always stood. There were lights, all colors, and ornaments shining against the green of a pine. "Where did it come from?" I asked. "I asked the Gates boy to cut it," my mother said. "I wouldn't have had one just for myself, but when in great need... such a rush! He just brought it in this afternoon." The pine reached to the proper height, almost to the ceiling, and the Tree Top Crystal Star was in its place. A few green branches reached out a little awkwardly at the side, I thought, and there was a bit of bare trunk showing in the middle. But the tree filled the room with warm light and the whole house with the pleasant smell of Christmas. "It's not like the one you used to find," my mother went on. "Yours were always in good shape. I suppose the Gates boy didn't know where to look for a better one. But I couldn't be fussy ." "Don't worry," I told her. "It's perfect." It wasn't, of course, but at the moment I realized something for the first time: All Christmas trees are perfect. From the passage we can infer that _ . A) all the soldiers had the three-day holiday B) the writer could not go home for Christmas C) the writer spent his first Christmas during the war D) not all the soldiers went home for Christmas during the war
D
Q: I arrived at my mother's home for our Monday family dinner. The smells of food flew over from the kitchen. Mother was pulling out quilt after quilt from the boxes, proudly showing me their beauties. She was preparing for a quilt show at the Elmhurst Church. When we began to fold and put them back into the boxes, I noticed something at the bottom of one box. I pulled it out. "What is this?" I asked. "Oh?" Mom said, "That's Mama's quilt." I spread the quilt. It looked as if a group of school children had pieced it together; irregular designs, childish pictures, a _ line on the right. "Grandmother made this?" I said, surprised. My grandmother was a master at making quilts. This certainly didn't look like any of the quilts she had made. "Yes, right before she died. I brought it home with me last year and made some changes," she said. "I'm still working on it. See, this is what I've done so far." I looked at it more closely. She had made straight a crooked line. At the center of the quilt, she had stitched a piece of cloth with these words:"My mother made many quilts. She didn't get all lines straight. But I think this is beautiful. I want to see it finished. Her last quilt." "Oh, this is so nice, Mom," I said. It occurred to me that by completing my grandmother's quilt, my mother was honoring her own mother. I realized, too, that I held in my hands a family treasure. It started with the loving hands of one woman, and continued with the loving hands of another. Why did the author go to mother's home? A) To see her mother's quilts. B) To help prepare for a show. C) To get together for the family dinner. D) To discuss her grandmother's life.
A: C
Q: The traditional holiday is the most important to Chinese both home and abroad. United Kingdom Celebrations for Spring Festival in the UK started in 1980, with the first evening party held in 2002. Every new year, people get together and have a lot of activities. They sing songs, dance to music, share photos with friends or enjoy films in a cinema. United States Spring Festival has become a key time for Chinese living or working in the US. They join in a large evening party to welcome the traditional new year. It is a good chance for people to build a circle of friends and feel that they are not alone because they share the same culture and values. Australia The Chinese new year will be welcomed with three weeks of celebrations across Australia. Many people come to Sydney's Chinatown or Little Bourke in Melbourne. They enjoy fireworks, lion dances, dragon boat races and many other traditional activities. The celebrations are also a bridge towards better understanding between Chinese and non-Chinese. Singapore The family dinner on new year's eve is an important tradition for Chinese whether they were born in Singapore or moved there from China. They place traditional food on a table as an act of remembering their past. Then the whole family enjoy their dinner together. They usually hold it at home because having it in a restaurant takes away the meaning of the tradition. Celebrations for Spring Festival in the UK started in . A) 1890 B) 1980 C) 2000 D) 2002
A: B