题目内容：

Man has five senses(感官): sight, hearing, ________, taste and touch. They _____ information for the brain(大脑). For example, the eyes collect information ______ pictures and the ears collect information on ______.

Sight

_____ of a human's two eyes has an eyelid(眼皮) and an eyebrow(眉毛). They protect the eyes. The eyes can only see with light. Light_______ the picture of something into the eyes so the human can see it.

Hearing

Sounds travel _______ the air like waves (波). They are called sound waves. Human ears _______ cups. They catch these waves for the brain and the brain changes them into different sounds. Sound waves are much slower than light. So you always see lightning first and then you _____ the thunder.(雷声)

Smell

Humans smell with their _______ Most people can _____ about 10,000 kinds of smell. This is amazing! But dogs can smell 1,000 times better than humans. Humans have five million receptor cells (接受细胞). ______, dogs have two hundred million!

Taste

People can taste food because they have taste buds (味蕾) on their tongues. There are about 10,000 taste buds. Old taste buds die and new ones __________ every two weeks. But when people get older, this happens less often.

Touch

There are receptor cells for the sense of touch all over the body. This is different from ________ four senses. Touch receptor cells are in the lowest part of the skin. They help the body to have all kinds of feelings like pain, cold and heat. Some parts of the body (like the fingertips) are more sensitive than other parts of the body (like the back) because they have more _________ receptor cells.

1.A. listen    B. touch    C. smell    D. see

2.A. collect    B. give    C. throw    D. teach

3.A. in    B. through    C. from    D. on

4.A. noises    B. voices    C. sounds    D. feelings

5.A. All    B. Every    C. Each    D. None

6.A. carries    B. carry    C. to carry    D. carrying

7.A. on    B. in    C. through    D. of

8.A. are like    B. like    C. don’t like    D. enjoy

9.A. smell    B. taste    C. hear    D. touch

10.A. eyes    B. noses    C. ears    D. hands

11.A. tell    B. speak    C. talk    D. explain

12.A. However    B. And    C. So    D. But

13.A. come across    B. come in    C. come through    D. come out

14.A. others    B. another    C. the other    D. other

15.A. touch    B. smell    C. hearing    D. taste