You learn by seeing, hearing, tasting, smelling, and touching. How？ Your eyes, ears, m

outh, nose, and hands send messages to the brain inside your head. The brain is what lets you think and learn. You use it to find out about things.The eyes take pictures that go to the brain. Your eyes have many parts. Each one does something different. One part let’s in light. One part helps you see clearly. Still another part sees color.Your nose and mouth work together to tell your brain about taste. The part of the mouth that tastes things is the tongue. Try holding your nose. Then take a bite of apple. The fruit has no taste. Your nose has to be working for you to taste anything. And your tongue must be wet. Dry food on a dry tongue can’t be tasted.When you touch something, you know how is feels. Close your eyes. Put you hand on something. Is it hard or soft？ Is it hot or cold？ Your sense of touch tells the brain what you are feeling. As with the other senses, you learn about the world through the message that go to the brain.

1.The main idea of the passage is ().

A.how the brain works.

B.how the eyes and ears work.

C.how the brain works and how the eyes or ears work.

D.How we sense

2.How do we learn things？()

A.We see, hear, taste, smell and touch.

B.We send messages to our brains.

C.Messages from outside mix in our brains.

D.We tell our brains things around.

3.How do we know there is an apple in front of our eyes without touching it？()

A.We cut is.

B.We smell it.

C.We taste it.

D.We pare it.

4.Our brains know about taste through ().

A.our smelling

B.our tasting

C.our sensing

D.our smelling and our tasting

5.Which of the following statements is not true？()

A.We learn about the world as our organs work together

B.There are different parts of each organ

C.Each part does different things

D.Each part finds different results