SPEAKING Work in pairs or small groups. Do the body quiz on page 37. Check your answers with your teacher.
HOW MUCH DO YOU KNOW ABOUT THE HUMAN BODY?
1. What is the most common blood type?
a. AB-
b. B-
c. O+
2. How much do fingernails grow per month?
a. 0.75 mm
b. 1.5 mm
c. 3 mm
3. Where exactly is your heart?
a. On the left of your chest
b. In the middle of your chest
c. In the middle of your chest, a bit to the left
4. How long are the human intestines?
a. 3.5 m
b. 8.5 m
c. 13.5 m
5. How many hairs are there on the human scalp?
a. 90,000-150,000
b. 150,000-190,000
c. 190,000-250,000
6. What is the human body's biggest organ?
a. Liver
b. Brain
c. Skin
7. What is the average thickness of human skin?
a. 1-2 mm
b. 2-3 mm
c. 3-4 mm
