1.选择题- (共6题)
1.测量大米密度时，小华发现米粒间有空隙，若把空隙的体积也算作大米的体积将使密度的测量结果偏{#blank#}1{#/blank#}．于是，她用一个饮料瓶装满水，拧上盖子，用天平测出总质量为143g．又测出48g大米，放入瓶中，擦干溢出的水，再测这时的总质量．天平平衡时，右盘中的砝码和游码位置如图所示，则总质量为{#blank#}2{#/blank#} g．由此可以算出这种大米的密度为{#blank#}3{#/blank#} kg/m3．
4.如图所示的电路中，R0为定值电阻，R为滑动变阻器．当滑动变阻器两端电压为4V时，通过的电流为0.2A，此时滑动变阻器接入电路的阻值是多大？改变滑动变阻器接入电路的阻值，当电流为0.5A时，滑动变阻器消耗的功率为0.5W，则定值电阻R0的阻值是多大？
5.如图所示的电路中，R0为定值电阻，R为滑动变阻器．当滑动变阻器两端电压为4V时，通过的电流为0.2A，此时滑动变阻器接入电路的阻值是多大？改变滑动变阻器接入电路的阻值，当电流为0.5A时，滑动变阻器消耗的功率为0.5W，则定值电阻R0的阻值是多大？
6.在国际市场上，如果国际市场某商品单价从5美元涨到8美元, 在不考虑其他因素的前提下, 那么该商品价格＿＿；如果同期人民币对美元的汇率再从8：1变为7：1，在不考虑其他因素的前提下，用人民币购买该商品, 那么该商品价格＿＿。 （ ）
2.单项选择- (共8题)
7.
_________the thunderstorm ,they_________ the injured man in time. They felt sorry for that.
| A．Had it not been for ; could reach |
| B．If there was not; might have reached |
| C．But for; might reach |
| D．If there hadn’t been ; could have reached |
8.
With the gas _____, they had to quit the car and walked.
| A．ran out | B．running out | C．run out of | D．was run out of |
9.
__________ his project, the boy had to stay up late.
| A．Not finishing | B．Not finished |
| C．Having not finished | D．Not having finished |
10.
Unless __________, she won’t go to any party.
| A．inviting | B．having invited | C．invited | D．being invited |
11.
_______ is agreed that the traffic accident was largely ________ the driver’s carelessness.
| A．He, leading to | B．It, resulted in | C．It, due to | D．He, thanks to |
12.
I could never_________ such a person ________ always complains everything.
| A．come up with, who | B．put up with, as |
| C．end up with, who | D．live up to, as |
13.
It is in the west of China _____ _____ is no doubt that it is going to rain tomorrow.
| A．where; there | B．that; there | C．that; it | D．where; it |
试卷分析
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【1】题量占比
选择题:(6道)
单项选择:(8道)
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【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：3
5星难题：0
6星难题：4
7星难题：0
8星难题：1
9星难题：0