题目

如图所示，一电阻为R的矩形线圈abcd，边长分别为L1和L2，沿水平方向以恒定的速度v通过一匀强磁场，磁场区域的宽度为L，磁感应强度为B，方向垂直纸面向里。则如果L1＞L，则线圈通过磁场区域的过程中，一共释放了             焦耳热；如果L1＜L，则线圈通过磁场区域的过程中，一共释放了          焦耳热。      完型填空 　　Like most July days, it was hot．I stepped into a tiny ice-cream shop to 　　1　　 with a chocolate ice-cream．It was a very 　　2　　 store with little round tables and chairs． 　　As I entered, I found a very old woman 　　3　　 over a table near the door．Her back was so 　　4　　 bent by some sadness that her face nearly 　　5　　 the table top．I sat down facing her a couple of 　　6　　 away． 　　“Poor woman, I thought．What does she 　　7　　 life?Why does God let people live so long past their youth?” 　　As I thought, another aged lady entered the shop and sat down with her．Soon the two of them were 　　8　　 childhood days．They talked of how little the shop had changed in 70 years．In minutes, the two of them were shaking with 　　9　　． 　　I looked again at the first woman．Then in the 　　10　　 on a nearby wall, I caught a picture of myself．I was wearing a 　　11　　 shirt ;she was well dressed in white, the gold ring on her finger 　　12　　．I was 　　13　　; she was laughing．I was putting the 　　14　　 of my life together; she had millions of 　　15　　 memories to recall．I sat alone; she was 　　16　　 the day with a good friend．I was 　　17　　 worried about getting old; she was old, but it wasn't 　　18　　 her． 　　As I left the shop, I thought of my foolish question about God letting people live past their youth．Why, that woman was more 　　19　　 to life than I was．Age has not 　　20　　 her spirit． (1) [　　] A． warm up B． cool off C． freeze myself D． treat myself (2) [　　] A． old B． modern C． pretty D． ugly (3) [　　] A． lay B． stood C． bent D． sat (4) [　　] A． hardly B． merely C． strongly D． badly (5) [　　] A． connected B． touched C． hit D． joined (6) [　　] A． tables B． miles C． kilometers D． inches (7) [　　] A． offer to B． get out of C． take away from D． learn from (8) [　　] A． quarrelling over B． talking about C． arguing about D． discussing (9) [　　] A． anger B． crying C． laughter D． cold (10) [　　] A． curtain B． poster C． mirror D． board (11) [　　] A． beautiful B． dirty C． long D． fine (12) [　　] A． shinning B． shaking C． holding D． waving (13) [　　] A． happy B． surprised C． poor D． sad (14) [　　] A． periods B． pieces C． points D． masses (15) [　　] A． unhappy B． lucky C． wonderful D． fresh (16) [　　] A． sharing B． filling C． killing D． sparing (17) [　　] A． rarely B． mostly C． publicly D． secretly (18) [　　] A． pleasing B． hurting C． leaving D． punishing (19) [　　] A． alive B． changeable C． hopeless D． helpless (20) [　　] A． bent B． support C． cut D． broke