Ở C VÀ B

nữ có tóc dài nữ sinh con, nam tóc ngắn nam có sinh con khum 

Question 10. Why don’t we burn plas trash?10 điểm   

A. Because we do not have enough fuel.   

B. Because plas is non-flammable.   

C. Because plas is not harmful to the environment.   

D. Because burning plas releases harmful smoke.

Question 10. Why don’t we burn plas trash?10 điểm   A. Because we do not have enough fuel.   B. Because plas is non-flammable.   C. Because plas is not harmful to the environment.   d. Because burning plas releases harmful smoke.

Question 9 : 

Rubber is a good       material but plas is not.

A. elas

B. flexible

C. waterproof

D. insulating

Đáp án:

D nha

HT~

Question 8. A material which is NOT an electrical insulator _______.10 điểm  

 A. does not allow electricity to pass through it easily   

B. does not allow heat to travel through it easily   

C. allows heat to travel through it easily   

D. allows electricity to pass through it easily   

Question 7. What are the alloys of iron?10 điểm   

A. Aluminum and copper   

B. Cast iron and steel   

C. Lead and aluminum   

D. Steel and copper

trả lời :

B. Cast iron and steel

HOCTOT

Question 6. Which of the following is NOT a mixture?10 điểm  

( A). Pure water   B. Salt water   C. Muddy water   D. Tap water

trả lời :

A. Pure water   

B. Salt water 

  C. Muddy water   D. Tap water

^HT^

Trả lời:

B nha

HT

trả lời :

B nhá

^HT^

Question 3. Which process(es) can change a material from liquid to gas?    A. Only evaporation   B. Only boiling   C. Evaporation and boiling   D. Evaporation, boiling, and melting

D nha

o l m . v n

có người thì nói là đáp án C có người thì nói là đáp án D

câu d nha bạn

A nhé bn

Đáp án:

C. Evaporation and boiling

HT ~!

Question 3. Which process(es) can change a material from liquid to gas?   

 A. Only evaporation   

B. Only boiling   

C. Evaporation and boiling   

D. Evaporation, boiling, and melting