2021-2022八年级英语周报shx答案

11.【答案11)0500(2分)(2122分)(3)小于(2分)【关键能力】实验探究能力【解题思路】(1)由游标卡尺的读数规则可知，遮光条的宽度d=0.500cm:(2)设物块在水平桌面上的加速度为a,则有(4)2=2x,由牛顿第二定律有a=g,联立得}=织x,故图线斜率k=2，整理得=kd;(3)设桌面与水平面间的夹角为0，则由牛顿第二定律可得a=(u直cos0-sin0)g=ug,故uw

第二节this time, Lewis was so distracted by the UFO.That's when the object entered the last cloud. From thereit was nothing but open sky. "When it appeared, my lifechanged, "Lewis says. "There against the richness of theblue sky was a silvery shape that seemed to have arms andlegs! It was so beautiful to look at. At the same time, ithad the appearance of metal. It looked like some kind ofship with a strange design. The best way I could describe itis that it looked like a silver tool in the design of thestickman children draw. It was huge, moving fasst anmade no noise.As it sailed overhead, some of the arms and legsould move up and down, giving the impression of beingalive!"He says. "It made a couple of rolls, reflecting thesun in every direction just beautiful! Slowly it landed onthe land. I imagined extraterrestrials would come out, butthat didn't happen. Then it began to rise and move fartherand farther away. As it started to fade away from myview, I found myself short of breath and with tearsrunning down my cheeks. It had that much of an effect onme. I began thinking maybe that's what an angel lookslike

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