上海市虹口区2013年中考二模

普陀区C. Read the passage and fill in the blanks with proper words（在短文的空格内填入适内的内，使其内容通内，每空格限填一内，首字母已内):（14分）“There is no love which is more sincere than the love of food,” said Anglo-Irish writer George Bernard Shaw. Like Bernard Shaw, many writers e 86 food very much, and they say and write interesting things about it.British poet Owen Meredith(1831-1891) learnt a lot about food when he lived in Paris. He famously said, “We may live without friends, we may live without books, but civilized(文明的) men cannot live without c 87 .”American writer Mark Twain also wrote a lot about food. “When you have t 88 watermelon,” he wrote, “you know what angels eat.”American cookbook writer Alice May Brock has some simple rules about food from differentc 89 . “If you want to cook international food, it’s easy,” she wrote. “Put tomatoes on the plate and it’s Italian. Use soy sauce and it’s Chinese. A 90 wine to the recipe(食谱) and it’s French. Sour cream makes it Russian and lemon makes it Greek. But garlic makes it good! Cheers!”Tea and coffee are even more i 91 for some people. There is a Chinese saying, “It is better to go without food for three days, than tea for one.”American President Abraham Lincoln was often rude about the tea and coffee which was served to him. For example, he was in a Washington restaurant one day, and when the main meal was over, a cup of hot l 92 was placed in front of him. He drank a bit and was clearly angry. “Waiter,” he said, “if this is coffee, please bring me some tea; and if this is tea, please bring me some coffee.”宝山，嘉定区C. Read the passage and fill in the blanks with proper words（在短文的空格内填入适内的内，使其内容通内。

上海初中物理2013二模22题试题汇总(含答案黄浦区2013年22题22.在图13所示的电路中，电源电压为24伏且保持不变,电阻R的阻值为10欧。

求:①闭合电键S后电流表A的示数I。

②通电10秒,电阻R消耗的电功W。

③现有“ 50 Q 1A、” “10 Q 2A勺滑动变阻器两个，请选择一个接入电路a、b、c、d中的某两点，要求:电键S闭合后电流表示数变大,且为S断开时的三倍。

选择:将变阻器_____________ 入电路中 _________ 点间,使变阻器接入电路的电阻值为__________ 欧。

求出：电键闭合前、后，电流表示数的最大变化量△ I。

答案：22、50 Q 1A、ad、20、△l=1.6A奉贤区2013年22题21. 在图10(a所示的电路中，电阻R 1的电阻为20欧,变阻器R 2标有“ 20 Q 2A 字样，闭合电键S后,电流表A1的示数为0.3安。

求:(1电源电压值；(2将变阻器R 2的滑片P移至某点时，电路中某电流表的示数如图10(b所示，变阻器R2连入电路的阻值；二—亠」(3变阻器R 2所消耗的最大功率图10答案:20.6V;15 Q ; 12W21. 奉贤区2012年21题21.在如图11(a所示的电路中,电源电压保持不变，闭合电键S，当滑片P移到滑动变阻器R 2的某一端时，电压表、电流表的示数如图(b所示,求：(1滑动变阻器R 2接入电路的阻值；(2 10秒内电流通过R 2所做的功；(3当滑片P移到滑动变阻器R 2的另一端时，电压表和电流表的指针同时在(b 图指针所示的基础上偏转了相同的角度，求电源电压值。

（1 R 2=U 2/12=2 伏/ 0.2 安=10 欧2 分（2 W 2=U 2 I2t =2 伏>0.2 安X10 秒=4 焦 2 分（3 R仁厶U 1/△ I 1=2伏/0.4安=5欧1分U 1=I 1R 1=0.2 安X5 欧=1 伏1 分U = U 1+U 2=1 伏+2 伏=3 伏1 分浦东新区2013年22题22. 如图10(a所示的电路中，电源电压为18伏且保持不变，滑动变阻器R 2上标有“ 20 Q 1A字样,R 1的阻值为30欧。

上海初中2013年二模物理压强试题汇总（含答案）黄浦区2013年22题22．在图13所示的电路中，电源电压为24伏且保持不变，电阻R的阻值为10欧。

求：①闭合电键S后电流表A的示数I。

②通电10秒，电阻R消耗的电功W。

③现有“50Ω1A”、“10Ω2A”的滑动变阻器两个，请选择一个接入电路a、b、c、d中的某两点，要求：电键S闭合后电流表示数变大，且为S断开时的三倍。

选择：将变阻器____________接入电路中________两点间，使变阻器接入电路的电阻值为________欧。

求出：电键闭合前、后，电流表示数的最大变化量△I。

答案：22、50Ω1A、ad、20、△I=1.6A奉贤区2013年22题21．在图10（a）所示的电路中，电阻R1的电阻为20欧，变阻器R2标有“20Ω 2A”字样，闭合电键S后，电流表A1的示数为0.3安。

求：（1）电源电压值;（2）将变阻器R2的滑片P移至某点时，电路中某电流表的示数如图10（b）所示，变阻器R2连入电路的阻值；（3）变阻器R2所消耗的最大功率。

图10答案：20.6V;15Ω；12W21.奉贤区2012年21题21．在如图11（a）所示的电路中，电源电压保持不变，闭合电键S，当滑片P移到滑动变阻器R2的某一端时，电压表、电流表的示数如图（b）所示，求：（1）滑动变阻器R2接入电路的阻值；（2）10秒内电流通过R2所做的功；（3）当滑片P移到滑动变阻器R2的另一端时，电压表和电流表的指针同时在（b）图指针所示的基础上偏转了相同的角度，求电源电压值。

（1）R2＝U2/ I2＝2伏/ 0.2安＝10欧 2分（2）W2=U2 I2t＝2伏×0.2安×10秒＝4焦 2分（3）R1＝△U1/△I1＝2伏/0.4安＝5欧1分U1＝I1R1＝0.2安×5欧＝1伏 1分U= U1+U2＝1伏+2伏＝3伏 1分浦东新区2013年22题22．如图10(a)所示的电路中，电源电压为18伏且保持不变，滑动变阻器R2上标有“20Ω1A”字样，R1的阻值为30欧。

99. Write at least 60 words about the topic “What‟s Y our View on Setting off Firecrackers?”.（以“你对燃放爆竹的看法”为题写一篇不少于60个词的短文，标点符号不占格。

) Use the following points as a reference. （以下问题仅供参考）1) Do you usually set off firecrackers during the Spring Festival? What about last Spring Festival?2) How do you like this Chinese traditional custom?3) Do you think it good or not? Why or why not?（注意：短文中不得出现任何人名．．．．．．。

）．．．．．．．．．．．、校名及其它相关信息．．．．．．．．．，否则不予评分闸北99. Sometimes we need someone to share something with. What do you often share with others? Write a passage of at least 60 words on the topic …Sharing‟. (以“分享”为题，写一篇不少于60个词的短文。

标点符号不占格。

)（注意：短文中不得出现考生的姓名、校名及其他相关信息，否则不予评分。

）Use the following points as a reference. （以下问题仅供参考）●When do/did you often share … with others?●Who do/did you share … with?●Why do/did you want to share with him/her?●How do/did you feel?虹口99. Write a passage of at least 60 words on the topic “I want to recommend a good bookto …”. ( 以“我想要给……推荐一本好书”为题写一篇不少于60个词的短文，标点符号不占格。