[单项选择]Section B What’s that on your pizza You can bet it’s not just the extra cheese and onions you ordered. As matter of fact, you can count on at least a dozen other extra additives that you never asked for. (61) However, additives are nothing new, and neither is the controversy surrounding them. London in the 18th century could have been called the "adulterated food capital of the world." though it’s likely that other cities in other countries were just as guilty of the practice of food adulteration. One might think that food in the "old days" was pure and simple, but in many cases, what people paid for was not what they were getting. When black Indian tea became popular, it was common for manufacturers to buy up used tea leaves, which they stiffened with a gum solution and then tinted with lead, another dangerous substance. Practices like that eventually came to the public’s attention, and in 1860 the first British Food and Drug Act was passed. (62)