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问题 单项选择题 案例分析题

某商场三种商品销售量和零售价格资料如下表：

若根据上述资料编制三种商品的销售量指数和零售价格指数，并分析销售量和价格变动对销售额的影响，请回答下述问题：

销售量指数为（）

A.107.69%

B.116.35%

C.92.86%

D.90.56%

答案

参考答案：A

完形填空

Ma Wendi is used to curious glances  小题1:she walks six dogs at the same time. They are not all hers. 小题2: 25-year-old veterinary graduate is a full-time dog walker.

“I have to take care of twelve dogs at most,” said Ma. She charges 500 yuan a month per dog, and most customers leave their dogs at her house for a week. The  小题3: (busy) time is around Spring Festival, because many people go back to their hometowns for family reunions  小题4: go traveling.

“小题5: (compare) with people who have to be in their offices during the day, I don’t have to get up early  小题6: (squeeze) into the subway carriages in rush hour, and I still make a decent salary, ” she said.

“But it’s a tiring job. I have to work whenever there are dogs at home, and no time to enjoy 小题7:. Sometimes I want to go out for a meal or shopping, but I can’t do so  小题8: I worry about them, ” she said.

Ma knows  小题9: the dogs’ names, and when she calls one’s name, the dog instantly knows she 小题10: (refer) to it.
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问答题

用实验探究导体的材料、长度、横截面积对电阻的影响时，实验所需要的电源、开关、导线、灯泡、电流表都具备且完好，但供选择的导体只有下表中的两种规格：

编号材料长度/m横截面积/mm2
①镍铬10.5
②锰铜0.81
利用现有器材能够完成以下哪些探究任务？若能完成，在括号内打“√”；若不能完成，在括号内打“×”．

A、探究导体的材料对电阻的影响（______）

B、探究导体的长度对电阻的影响（______）

C、探究导体的横截面积对电阻的影响（______）
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