Đưa một quả cầu nhiễm điện âm lại gần một cái cực như cũng nhận điểm âm thì hiện tượng gì xảy ra Giải thích

Các câu hỏi liên quan

Exercise 2: Rewrite the sentences using used to 1.My mum lived in a small village when she was a girl. → My mum .................................................................... 2.My parents lived in the USA when they were young. =>My parents ………………………………………… 3.We cycled to school two years ago. → We .......................................................................... 4.There did not use to be many traffic accidents before. → Now there are .......................................................... 5.My uncle was a bus driver some years ago, but now he has a desk job. → My uncle.................................................................. 6.Dennis gave up smoking three years ago. => Dennis…………………………………………….. 7.My brother had his hair cut short when he joined the army. =>My brother ………………………………………… Exercise 3: Choose the best answer: 1. I like coffee ___ I don't like tea. A. and B. but C. so D. because 2. I cannot swim ___ ski. A. so B. but C. or D. because 3. I want a new TV ___ the one I have now is broken. A. and B. but C. so D. because 4. I had to work on Saturday ___ I couldn't go to John's party. A. and B. but C. so D. because 5. My name is Jim ___ I'm your new teacher. A. and B. but C. so D. because 6. We live in the same building ________ we have hardly seen each other A. and B. although C. but D. so 7. I went to buy a Rolling Stones CD ________ the shop didn't have it. A. and B. but C. however D. so