Question

[Won Yeon]

Energy can be transformed from one into another in different ways. For example, electric energy becomes (1)_____ energy in the radio set or become light energy in the TV set. But energy can neither be finished off nor be produced. This is called the law of (2)_____ of energy.
It is important for us to make use of energy. Expanding gases can be used to run a machine or to make airplane (3)_____ in the air. 

1 a. light    b. sound    c. atomic    d. heat

2  a. preservation    b. conservation    c. protection    d. formation

3  a. fly                   b. to fly                   c. flying             d. flies

Answer 1

[Phạm Vĩnh Linh]

Energy can be transformed from one into another in different ways. For example, electric energy becomes (1)_____ energy in the radio set or become light energy in the TV set. But energy can neither be finished off nor be produced. This is called the law of (2)_____ of energy.
It is important for us to make use of energy. Expanding gases can be used to run a machine or to make airplane (3)_____ in the air. 

1 a. light    b. sound    c. atomic    d. heat

2  a. preservation    b. conservation    c. protection    d. formation

3  a. fly                   b. to fly                   c. flying             d. flies

Answer 2

[팜 칸 후옌( •̀ ω •́ )✧∑∏⨊ΞΨ]

1 a. light    b. sound    c. atomic    d. heat

2  a. preservation    b. conservation    c. protection    d. formation

3  a. fly                   b. to fly                   c. flying             d. flies