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Jouer Froggy Jumps
1. What is the topic of lesson 11?
A
Go to the sound
B
Pass the sound
C
Hear the sound
2. What is it in the circle?
A
light source
B
food
C
sound source
3. What is "turning fork"?
A
B
C
4. In the experiment "The Wave of the Pipe", we will pour ______ into the plastic bottle.
A
tiny polystyrene balls
B
gauze
C
rubber band
5. What can the "rubber band" do?
A
stick something
B
tie something
C
hit something
6. Sound source means that the sound is caused by the ______ of the object.
A
size
B
mediums
C
vibration
7. Which of the following picture is most related to "whistle" ?
A
B
C