Đề 4

Building blocks in Scratch are divided into many categories, for example, Motion, Events, Operators. Which category does the following block belong to?

• Motion

• Events

• Operator

• Sensing

• Control

The Scratch project has received financial support from the following organizations:

National Science Foundation, Scratch Foundation, Siegel Family Endowment, Google,

LEGO Foundation, Intel, Cartoon Network, Lemann Foundation, MacArthur Foundation.

The Scratch project is under direct maintenance by which of the following organization?

• Lifelong Kindergarten Group

• MIT Physics Faculty

• Google

• Intel

• None of the above

Referring to the script and scene below, why is the clone not seen after clicking the green flag?

• Clone is not created.

• The script is not executed.

• The clone overlaps with the original.

• The clone is spawn outside of the scene.

• None of the above.

Given the following scene. Why doesn’t the cat stop “meowing” even after the mouse was clicked once? Or how should it be fixed?

• "STOP ALL"should be put at the bottom of the script.

• “Repeat until” should be replaced by "FOREVER"

• "START SHOW MEOW" should be put under "WAIT 1 SECONDS"

• Mouse down event is not captured during "WAIT 1 SECONDS"

• None of the above.

Given the following scene. Why does the sprite “Cat” not appear moving to random position after the green flag was clicked? Or how should it be fixed?

• 
• 
• “Go to random position” should be set to “go to (123, 456)”.

• All of the above.

• None of the above.

Given the operator. Which of the following is equivalent to the above when putting inside the “if” block?

• 
• 
• 
• All of the above

• None of the above

What is the cat’s position after clicking the green flag?

• (0, 10)

• (90, 10)

• (90, 0)

• (10, 0)

• None of the above

Which of the following script gives the same final outcome as the above script and scene?

• 
• 
• 
• 
• 

Given the following scene. After the green flag is clicked, the cat would move gradually from (0, 0) to (100, 0). Which of the following can slow down its speed?

• Increase the cat’s weight by adding more script blocks.

• Add more one "WAIT 0.1 SECONDS" directly below "MOVE 10 STEPS"

• Reduce the number of repeating times from 10 to 2.

• Set the initial position to (-100, 0).

• None of the above.

Given the cat is initially at (0, 0), which of the following script is equivalent as follow?

• 
• 
• 
• 
• None of the above