If you think education is expensive, try ignorance.” Test # 1 Choose the correct answer

22. One of the differences between some whales and dolphins is that . . . .

A) whales don't provide milk for their young, but dolphins do

B) although dolphins have lungs for breathing, most whales don't

C) while all dolphins are warm-blooded, whales are cold-blooded

D) whereas all dolphins have teeth, some whales don't have any
23. From the information given in the passage, we can infer that dolphins . . . .

A) have difficulty surviving in captivity

B) use only one lung at a time

C) are among the largest marine animals

D) don't breathe underwater
24. One of the special characteristics of the bottle-nosed dolphin is that . . . .

A) it is very interested in people

B) unlike others, it lives in salt water

C) it is cleverer than most animals

D) it enjoys being held in captivity