题目

03（全国卷）11 、图4中虚线所示为静电场中的等势面1、2、3、4，相邻的等势面之间的电势差相等，其中等势面3的电势为0。一带正电的点电荷在静电力的作用下运动，经过a、b点时的动能分别为26eV和5eV，当这一点电荷运动到某一位置，其电势能变为－8eV时，它的动能应为 （ ） A．8eV B．15eV C．20eV D．34eV 阅读下面短文，从短文后各题所给的四个选项(ABC和D)中，选出可以填入空白处的最佳选项。 　　At the age of five, Shizuka Arakawa started to take skating lessons．Her motivation was 　　1　　：wearing pretty outfits!Very quickly, she 　　2　　 a passion for skating, and she decided to 　　3　　 all her free time to training．At the age of eight, she was already 　　4　　 to perform a triple salchow(三周跳)．The young girl from 　　5　　 won five the national championships, three times as a junior and twice as a senior． 　　In 1998 in Nagano, Shizuka Arakawa 　　6　　 for the first time in the Olympic Games, at the tender age of 16．Japan had high 　　7　　 for her．　　8　　 the Emperor and Empress of Japan came to see her performance．She finished thirteenth in the 　　9　　 rankings．Four years 　　10　　, she was not present at the Salt Lake City Games．The skater finished second in the Japanese national championships and was not 　　11　　 in the Japanese Olympic team．In 　　12　　 of this, Shizuka Arakawa was successful in 　　13　　 championships, such as the Four Continents and NHK(日本广播协会)Trophy．In 2004 in Dortmund, she became women's world 　　14　　 skating champion． 　　In 2006, after a year－long period in which she almost 　　15　　 her career, Shizuka Arakawa took 　　16　　 in the Turin Olympic Games．A new coach and a new programme had 　　17　　 a new, invigorated(充满活力的)Shizuka．The short programme was a real challenge 　　18　　 the Japanese skater．She performed a noteworthy sequence to Chopin's“Fantasie Impromptu”, finishing third．On 23 February, 2006, she performed a perfect long programme 　　19　　 by Puccini's“Fantasy for Violin”, she performed splendidly and she obtained a 　　20　　 of 191.34, which won her the top step of the winner's podium(领奖台)in Turin． (1) [　　] A． complex B． bright C． simple D． stupid (2) [　　] A． developed B． became C． interested D． realized (3) [　　] A． occupy B． spend C． refer D． devote (4) [　　] A． ready B． able C． willing D． used (5) [　　] A． China B． Japan C． America D． Russia (6) [　　] A． attended B． prepared C． entered D． participated (7) [　　] A． hopes B． ambition C． chances D． help (8) [　　] A． Ever B． Already C． Even D． Still (9) [　　] A． middle B． final C． general D． beginning (10) [　　] A． after B． before C． ago D． later (11) [　　] A． contained B． elected C． held D． included (12) [　　] A． spite B． charge C． honor D． possession (13) [　　] A． others B． another C． other D． else (14) [　　] A． character B． figure C． creature D． portrait (15) [　　] A． ruined B． ended C． left D． fired (16) [　　] A． part B． pride C． control D． turns (17) [　　] A． resulted B． caused C． accessed D． produced (18) [　　] A． at B． towards C． for D． upon (19) [　　] A． Danced B． Accompanied C． Followed D． Played (20) [　　] A． score B． level C． point D． top