采用物理和化学方法，彻底杀灭物体中微生物的方法称为（）

A.灭菌

B.消毒

C.防腐

D.除菌

E.无菌

People have strange ideas about food. In the 18th century, people in the USA g　小题1:　      tomatoes, but they never a　　小题2:        them. They thought tomatoes were d　　小题3:     food. People called them poisonous (有毒的) apples.

Thomas Jefferson was a learned president (有学问的总统) and he knew people in Paris enjoyed the nice  t　　小题4:     of tomatoes. He wanted his people to enjoy tomatoes, but  h　　小题5:      could he change their ideas?

Jefferson grew some tomatoes in his garden. And he  t　小题6:　      his cook to cook tomato soup (汤). Then he held a party. There was  p　　 小题7:    of tomato soup on the table. He invited visitors to try the soup. He wasn’t  s　　   小题8:    when he found all of them liked the soup. Of course, he  n　　小题9:       told them they were eating poisonous apples.

Soon  a　　小题10:      that, more and more Americans loved tomatoes.