摘要: 表示一方随另一方变化时用“the more-the more- 句型.如:The harder you work, the more progress you will make.
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小明利用如图甲所示的电路探究电流跟电阻的关系。已知电源电压为6V且保持不变,实验用到的电阻阻值分别为5Ω、10Ω、15Ω、20Ω、25Ω。
⑴请根据图甲将图乙所示的实物电路连接完整(导线不允许交叉)。
⑵实验中将5Ω电阻换成10Ω电阻后,应将滑动变阻器的滑片P向______端移动(左/ 右),移动滑片的目的是___________________。正确操作后,记下电流表的示数,得到电流I随电阻R变化的图象如图乙所示,由图象可得出的结论是:_________________________。
⑶为完成整个实验,应该选取最大阻值不小于 Ω的滑动变阻器。
⑷实验过程中,如果出现了电流表示数为0,电压表示数接近6V,电路发生的故障可能是_____________________。 查看习题详情和答案>>
⑴请根据图甲将图乙所示的实物电路连接完整(导线不允许交叉)。
⑵实验中将5Ω电阻换成10Ω电阻后,应将滑动变阻器的滑片P向______端移动(左/ 右),移动滑片的目的是___________________。正确操作后,记下电流表的示数,得到电流I随电阻R变化的图象如图乙所示,由图象可得出的结论是:_________________________。
⑶为完成整个实验,应该选取最大阻值不小于 Ω的滑动变阻器。
⑷实验过程中,如果出现了电流表示数为0,电压表示数接近6V,电路发生的故障可能是_____________________。 查看习题详情和答案>>
写作
你们班举办了一场辩论赛,一方认为广告有益,另一方认为广告无益.请你分别以正方和反方一辩的身份阐明本方的观点.要求不少于100词.
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任务型阅读。
Without changes, our lives would be very boring. It would be like listening to the same song on
your MP4 player over and over again.
Some people don't like changes. They want to do the same things and see the same people every
day. ①当事情变化时,这让他们感觉不舒服. It's like some children. If all their toys aren't in their
places, they can't go to sleep. However, changing is a big part of life and we all change in small ways
every day. The young get stronger and the old get weaker. We meet new friends or we get new
hobbies.
You'll go through many changes in your life. In America, some people change jobs over ten times
during their lives. Some change their homes many times. They like changing because they think it
improves their lives.
②China has seen many changes in recent years and most of them are very good. People are
healthier and they're living longer. People have more money and more food, and they also get a
better education. Children are growing taller and the children in Shanghai are now the tallest in China.
Changes have been good for China and they'll be good for you.
your MP4 player over and over again.
Some people don't like changes. They want to do the same things and see the same people every
day. ①当事情变化时,这让他们感觉不舒服. It's like some children. If all their toys aren't in their
places, they can't go to sleep. However, changing is a big part of life and we all change in small ways
every day. The young get stronger and the old get weaker. We meet new friends or we get new
hobbies.
You'll go through many changes in your life. In America, some people change jobs over ten times
during their lives. Some change their homes many times. They like changing because they think it
improves their lives.
②China has seen many changes in recent years and most of them are very good. People are
healthier and they're living longer. People have more money and more food, and they also get a
better education. Children are growing taller and the children in Shanghai are now the tallest in China.
Changes have been good for China and they'll be good for you.
根据短文内容,完成下列任务。
1.任务一:将文中划线的句子①翻译成英语。
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2. 任务二:将文中划线的句子②翻译成汉语。
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3. 任务三:根据短文内容,选择正确答案_____.
Which is TRUE according to (根据) the passage?
A. People are less healthy and they’re living a shorter life in China.
B. The children in Shanghai are now the tallest in the world.
C. Many good changes have taken place in recent years in China.
D. People have less money, but they have a better education in China.
B. The children in Shanghai are now the tallest in the world.
C. Many good changes have taken place in recent years in China.
D. People have less money, but they have a better education in China.
4. 任务四:回答问题。
Why do Americans like changes?
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5. 任务五:给短文拟一个恰当的题目。
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关于科学家和他们的贡献,下列说法中正确的是
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A.安培首先发现了电流的磁效应 |
B.伽利略认为自由落体运动是速度随位移均匀变化的运动 |
C.牛顿发现了万有引力定律,并计算出太阳与地球间引力的大小 |
D.法拉第提出了电场的观点,说明处于电场中电荷所受到的力是电场给予的 |