Một thanh vật chưa bị nhiễm điện được cọ xát và sau đó trở thành vật mang điện tích âm. Vật khi đó ở vào tình trạng nào trong các tình trạng sau?

A.

Nhận thêm điện tích dương

B.

Mất bớt electron

C.

Nhận thêm electron

D.

Mất bớt điện tích dương

Give the correct form of the word given to complete the sentence.

1. Young children are expected to show _____________ to their parents. (obey)

2. When cycling on the roads, remember: _____________ first. (safe)

3. Children should avoid _____________ foods such as hamburger and chips. (health)

4. Most road accidents happen because the motorists drive _____________. (care)

5. It is unsafe and _____________ to pass another vehicle on the left. (legal)

6. My _____________ was delayed for over two hours due to bad weather. (fly)

7. Everyone should _____________ obey traffic rules for their own safety. (strict)

8. The policeman _____________ the car to stop with a flashlight. (sign)

9. Signs with red circles are mostly _____________ - that means you can’t do something. (prohibit)

10. This _____________ sign indicates that traffic lights are ahead. (warn)

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