百所名校最新高考模拟示范卷英语答案

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34.[选修3一4模块]答室(1)ADE(5分)解题分析(1)在1=1“时，b,c质点位于平衡位置，其中质点向上振动，b质点向下振动，则题图乙可以表示（质点的振动图像，A项正确，B项错误：=1,5时的波形因如图甲所示，则知此时@质点速度大于b质底速度.C项错溪：由题图甲可知A-8m,由题图乙可知T-2s,则波速v-今-4m/s,D项正确：=0时的波形图如图乙所示，此时b质点速度沿方向y轴正方向，E项正确。(2)解：①由折射定律有需n2分)由几何关系可知y十20=90°(1分)解得渔i=m7=3,(2分)②光在水面上发生全反射，有sinC=上(2分)由几何关系可如C十2a=90°(1分)解得平面镜与水平方向的夹角a=15°，(2分)

【语篇类型】记叙文【主题语境】人与自我—一顿晚餐【文章大意】作者是一位抚养四个孩子的单身母亲,生活过得很艰辛,温饱都成了难题,但是当女儿请求让邻居家的五个孩子留下吃晚饭时,作者还是同意了。这顿晚饭会带给作者什么样的感受和发现呢?【写作指导】根据 Paragraph I的开头"晚餐快要结束时,我感觉好多了"可知,第一段可以描述作者在晚餐快要结束时的心情以及晚餐结束后的场景,再结合均 aragraph2开头中的" we left two for vou"可知,第一段还应写到作者发现居然还有肉丸剩下的内容。Paragraph2的开头是"‘那是我们吃过的最好吃的肉丸,所以我们留下了两颗给你,邻居家的一个男孩子说",由此可推断出,本段续写主要描述作者听到孩予的话后的深思、对孩子们的赞叹以及对两颗肉丸的处理,如让邻居家的孩子带回家等One passible versionParagraph IBy the end of the meal I felt so much better. The troubles burdeningme when I first walked through the door had gone. The children had lickedtheir plates clean. We were all full and happy, and granother's company. I moved to clear the table with my oldest daughter. Mymouth dropped open. Two meatballs sat uneaten on the plate. How was thapossible? My daughter put her hand on my shoulder, "What,s wrong, MomDid everybody eat? "Yes. It was delicious! "the children repliedParagraph 2The best meatballs ice ever had, so we left two for you, "one neighborboy said. I was astonished. How had I managed to feed everyone Had thekids cut the meatballs in half? Maybe some of them had only eatenspaghetti. What kind and considerate children! That night left me with anoverflowing heart and great hope for the future. i gave the leftovers to theneighbor children for lunch the next day. Things were hard now, but theywould get better. For us. For the neighbor children