Question 1

What is blood?

Accepted Answer

a kind of transport system.

Answer

a kind of dioxide.

Answer

not an important system from our bodies.

Answer

a kind of oxygen system.

Question 2

How much blood have people got in their bodies?

Accepted Answer

about five liters.

Answer

about four liters.

Answer

about seven liters.

Answer

about six liters.

Question 3

What is a blood donor?

Accepted Answer

Someone who gives blood to another person.

Answer

Someone who develops blood types.

Answer

Someone who receives blood from another person.

Answer

Karl Landsteiner.

Question 4

Who was Karl Landsteiner?

Accepted Answer

He discovered different blood types, saving millions of lives.

Answer

He donated blood to millions of people.

Answer

He developed different blood types,

Answer

An important donor.

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