1 . During the discussion, Mr. Smith’s _________ voice deeply impressed me. (power)

2 . When there is no ________, the radio can’t work. (powerful)

3 . Both red and black represent ________. But I prefer to wear red when I feel tired.

A．wisdom

B．peace

C．calm

D．power

4 . Electricity provides us with _______ in many different ways in our daily life, but we should always use it properly and carefully.

A．peace

B．program

C．panic

D．power

5 . They use solar p________ to make electricity.

6 . We can use the wind p________ to make electricity in the future.

7 . The toy train uses power from the Sun.

A．light

B．energy

C．land

8 . — Can we have a rest? I don’t have the ________ to walk any further.
— Come on. We’ll be right there.

A．force

B．strength

C．power

D．stress

9 . Mr. Wind was so proud that he thought he was ________ than Mr. Sun.（power）

10 . Both red and black represent ________ . But I prefer to wear red when I feel tired.

A．peace

B．peaceful

C．power

D．powerful