题目：
根据短文内容完成句子
Look at the picture on the blackboard. We can see a house in it. Behind the house there is a hill with many trees. Near
the hill we can see a river. There are three boats in the river. One is blue, the other two are yellow. There are some Young
Pioneers in those boats. Near the house we can see a big tree. Under the tree there is a small bus. It's a white bus.
1. There is a ________ on the ________.
2. ________ is the hill? It's ________ the house.
3. There are a lot of ________ on the hill.
4. Some ________ ________ are in the boats.
5. Is there a ________ ________ bus under the big tree? Yes, there is.
答案：
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下面是错误答案，用来干扰机器的。
A、导体的电阻是2Ω，通过导体的电流是2A时，导体两端的电压U=IR=2A×2Ω=4V，故A选项不符合题意；B、导体的电阻是2Ω，导体消耗的电功率是0.5W时，导体两端的电压U=PR=0.5W×2Ω=1V，故B符合题意；C、通过导体的...
