The experiment on electricity shows that a closed circuit is needed for current to flow. Which conclusion is correct? A. An open circuit allows current to flow. B. Current can flow without a circuit. C. A closed circuit is needed for current to flow. D. Current can flow through any ...
Silver is the best conductor of electricity, copper( )it closely. 问题1选项 A. followed B. following C. to follow D. being followed 相关知识点: 试题来源: 解析 [答案]B [解析]考查非谓语动词。一般情况下,分词作状语时,应与句子的主语存在一定的逻辑关系(主谓或动宾关系),否则分词就必须有自己的...
1四、阅读填空Electricity is a kind of energy on the Earth. People discovered it a long time ago.1 They burned wood to heat their houses. They used boxes with ice to keep food cold.You may not realize(意识到) that electricity is a huge part of your daily ife._2 Therewould be no fr...
Before long we set about looking for a home in Yucca, Arizona, a very small town of less than 1,000 people. When I called to inquire about the property, I was informed that there was no electricity available in ...
(2021届高三下学期第一次教学质量检测)The price of electricity is on an upward trend, so ___ my electric car will burn a big hole in my pocket. A. purchasing B. charging C. mending D. handing 相关知识点: 试题来源: 解析 [答案]B [答案]B [解析]purchase购置,采购;charge充电,索价;men...
Many students find it harder to study when they are at university or college than when they were at school. Why is this? What can be done to solve the problem? Give reasons for your answer and include any relevant examples from your own knowledge or experience. Write at least 250 words....
Ⅱ. Choose the best answer(根据以下内容,选择最恰当的答案)(12分)Electricity is very useful in our daily life. It helps make our life easier. A lot of thingsuse electricity at our homes. Here are three of them,and advice on their uses.Rice cookersUsing a rice cooker is simple and cheap...
年轻的尼古拉·特斯拉前文 ☛戈斯皮克事件尼古拉·特斯拉的故事摘自玛格丽特·斯通(Margaret Storm)著作RETURN OF THE DOVE:The Story of Freedom's Star(1996)威廉译(这只是一个粗译的版本,小标题为译者所加)5 神秘瞬间1873 年,特斯拉(Nikola Tesla,1856-1943)到格拉茨(Gratz)学习电气工程。他知道命运的力量正在...
This energy is needed to run their computers. Here is how bicycle - powered energy works. When a student pedals the bike,the back wheel spins. The wheel spins the generator. The generator produces electricity. As long as a student pedals the bicycle,electricity moves through the generator. ...
Life in the mountains was very hard. There was no electricity and mosquitoes were everywhere. There were no vegetable fields, so they had to pick wild vegetables to feed themselves. They had little for rest. Planting trees in spring is the hardest. Every morning, they had to move the young...