Màu sắc của cầu vồng

Cô Annanew
American English

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Please answer the following questions of understanding:

Question 1:
When does a rainbow typically occur?
a Before the rain
b After the rain
c During the rain
d On sunny days
Question 2:
How many colors are there in a typical rainbow?
a Five
b Six
c Seven
d Eight
Question 3:
Which two colors are close in shade and hard to distinguish?
a Red and Orange
b Yellow and Green
c Blue and Green
d Indigo and Violet
Question 4:
What does the acronym ROYGBIV stand for?
a The names of the colors in the rainbow
b A type of rainbow
c A scientific term for light
d The process of rainbow formation
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