题目

如图，一束光线照在坡度为1： 的斜坡上，被斜坡上的平面镜反射成与地面平行的光线，则这束光线与坡面的夹角α是度． 答案：【1】30阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。续写的词数应为150左右。I peered over my grandma’s shoulder as she sewed pieces of cloth together. The two pieces became one faster than I’d imagined. The colors, however, looked ugly when put together and none of the patterns matched. All the patches (补丁) on this blanket seemed to disagree.“Grandma， that’s the ugliest quilt (棉被) I’ve ever seen.”“Oh, sweetie, it’s warm and beautiful,” said Grandma, pointing to a pile of crazy patterned shirts and suits. “I can take these old clothes that Grandpa and I will never wear again and turn them into something useful and good. It’s not the quilts appearance but the love that sews it together that makes it beautiful. This quilt will keep you warm on a cold night like tonight. And I know that for a fact.” Grandma put her hand on my shoulder, “Not everyone is as lucky as we are. Here, put on your coat. We’ll get a second opinion about how ugly my quilts are.”Grandma folded a finished quilt and tucked it into a shopping bag. Afterwards, we got in the car and drove downtown. The white snow turned grayer as we got to the city. Eventually, Grandma pulled up at a dark alley (胡同) and we got out of the car. The terrible smell of rotting garbage made me feel sick and pinch my nose shut. Grandma took my hand and led me to the street lamp. I could see the snow shimmering (发出微光) in the light.Grandma paused. “There’s usually somebody down this alley. It’s quiet and out of the wind--a good place to stay on cold nights. A nice warm quilt might make it even better.”The dark engulfed (吞没) Grandma and I as we stepped deep into the alley. The pavement was cracked and missing in spots. Chicken bones and stained boxes littered their way. And Grandma’s shoes made a loud sound with each step. Feeling frightened, I squeezed Grandma’s hand. Grandma squeezed my hand back. “Its OK.” she smiled.“Who’s there?” shouted a voice out of the darkness.Paragraph 1:“I have a nice warm quilt, if you want it,” said Grandma.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Paragraph 2:Back home, I found a worn-out quilt by accident in a cupboard. _________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________