28£®Which of the following is TRUE according to the text?

A. Eating garlic is good for our eyes.

B. Sticky sweets are damaging to our teeth.

C. Swimming after a meal is dangerous.

D. Carrots prevent people from catching colds.

29£®The author develops the third paragraph mainly ________.

A. by cause and effects

B. by order in space

C. by order in time

D. by examples