1.选择题- (共7题)
3.如图是小明同学探究并联电路电流规律的电路图，他发现，只闭合S1时灯泡L1比同时闭合S1、S2时亮，他就这个问题询问老师，老师解释道：电源也有电阻且相当于串联在干路上．若电源的电压为3V，电源的电阻为2Ω，灯泡L1、L2的电阻均为8Ω，请你计算，只闭合S1比同时闭合S1、S2时，灯泡L1的电功率减少了{#blank#}1{#/blank#} W（灯泡电阻保持不变）．
5.如图是研究“电流通过导体产生的热量和电流大小的关系”的实验，通电相同的时间，R1产生的热量{#blank#}1{#/blank#}（选填“大于”“小于”或“等于”）R2产生的热量．
6.PQ是一轻质金属棒，用两根细导线吊着悬在蹄形磁铁中间，如图所示，当开关S打到不同的位置时，可研究不同的电磁现象，当开关S打到位置2时，可探究{#blank#}1{#/blank#}，利用该原理我们制造了{#blank#}2{#/blank#}（选填“电动机”或“发电机”）．
7.电阻甲、乙的电流和电压关系如图所示．当甲和乙串联接在3V的电路中时，电路中电流为{#blank#}1{#/blank#} A，当两个电阻并联接在2V的电源两端，则电路中消耗的总功率为{#blank#}2{#/blank#} W．
2.单项选择- (共9题)
8.
The saying “Old friends and old wine are best” means the things and people ____ we know are better than the unfamiliar.
| A．what | B．which | C．that | D．who |
9.
According to agreement, the electric car will be built at Great Wall Motors’ Plant, with first model to be made in 2014.
| A．an ; the | B．an ; a | C．the ; a | D．the ; the |
10.
The ground is slippery. Hold onto the rope and don’t .
| A．put off | B．turn up | C．let go | D．take apart |
11.
— Hi, what’s the rush?
— I am off to the library right now to a seat for my roommate!
— I am off to the library right now to a seat for my roommate!
| A．preserve | B．order | C．reserve | D．provide |
12.
Hainan is a very large island and it’s the second island in China.
| A．large | B．larger | C．largest | D．most large |
13.
Children in that kindergarten are sometimes asked to sit on their hands ______listening to the teacher.
| A．while | B．though | C．after | D．during |
14.
_________ difficult and challenging the task may be, we must finish it on time, because there is a possibility _________we’ll be fired if we can’t fulfill the task on time．
| A．Whatever; that | B．However; that |
| C．Whatever; which | D．However; as |
15.
I don't believe we've met before, I must say you do look familiar.
| A．therefore | B．although | C．since | D．for |
试卷分析
-
【1】题量占比
选择题:(7道)
单项选择:(9道)
-
【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：1
5星难题：0
6星难题：8
7星难题：0
8星难题：0
9星难题：0