英语周报七年级新目标第七期2021-2022学年答案

【答案与解析本文是一篇记叙文。作者主要介绍了自己的旅行。24.D细节理解题。根据第一段“ My goal was to visit100 countries by the time I was30. For whateverreasons, I thought that'sounded cool. I ended up achieving that goal at about25.”可知,作者在25岁左右的时候已经实现了游览100个国家的目标。25.B推理判断题。根据第二段“n2006, I got an email from a friend where I learned that there was actually arecord of the youngest to visit every country in the world.. "K"Five years later, it turned out to be a greatdecision, and I became the youngest American to visit every country when I was32then.”可推断,作者在2011年创造了一项新的世界纪录—成为世界上游览了所有国家的最年轻的美国人。算“,)26.C推理判断题。根据最后一段“ But in the summer of2008, I simply resigned my position at a major WallStreet firm. It happened right before the collapse(ELf) of several major firms, so it made me look smartbut it was pure coincidence.”可知,作者恰巧在大公司瓦解前辞职了。由此可推断,作者的辞职对他来说是件幸事27.D主旨大意题。通读全文可知,作者主要是介绍了他的旅行。

2.【答案】(1)a:(2)偏小:48:(3)0.32(0.31~0.33)本题主要考查了伏安特性曲线(1)的关键是明确采用分压式接法时,电键闭合前应将滑片置于输出电压最小的一端以保护(2)的关键是根据欧姆定律测量值和真实值的表达式即可:对于Ⅰ-U图象,应根欧姆定律关于I与U的函数表达式,可知图象上的点与原点连线的斜率倒数应等于小灯泡的(3)的Ⅰ-U图线,投出灯泡直接接在电源上时的即可求解解答】(1)闭合开关前,应将滑最小的a端,以保护电流表(2)根据欧姆定律,电阻测量值为测若考虑电压表内阻影响,待测电阻的直实值为1根据-U图象读出U=24时对应的电流=0.5A,所以小灯泡的电阻(3联在电源的由姆定律:E=2U+I,代入数据化筒0+05(4),在泡的功率P=UI=0315W≈032W(0.31~0.33)故答案为:(1)a:(2偏小:48:(3)032(0.31~033)

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