阅读理解。 "In only six days I lost seven pounds of weight." "Two full inches in the first three days!" These are the kinds of statements used in magazine, newspaper, radio and television ads, promising newshapes and new looks to those who buy the medicine or the device. The promoters of products say they canshape the legs, slim the face, smooth wrinkles, or in some other way to beauty or desirability. Often such products are nothing more than money- things for their promoter. The re they produceare questionable, and some are erous to health. To understand how these products can be legally promoted to the public, it is necessary? Understand something of the laws covering their regulation. If the product is a drug, FDA (Food Drug Administration) can require proof (证明) under the Food, Drug, and Cosmetic Act that safe and effective before it is put onthe market. But if the product is a device, FDA. has no author to require premarketing proof of safety or effectiveness. If a product already on the marker er to health, FDA. can request the producer or distributorto remove it from the a voluntarily, or it can take legal action,including seizure (查封) of the product. One notable case a few years ago involved an electrical device called the Relaxacisor, had been sold for reducing the waistline. The Relaxacisor produced electrical shocks to the through contact pads. FDA. tooklegal action against the distributor to stop the sale of the grounds that it was erous to health and life. Obviously, most of the devices on the maker have never been the subject of court proceedings (法律诉讼), and new devices appear continually. Before buying, it is up to the consumer to the safety or effectivenessof such items. 1. It can be inferred that ads mentioned in the text are _____. A. objectiveB. costly C. unreliable D. illegal 2. Which of the following is true according to the text? A. The court is in charge of removing erous product. B. New products are more likely to be questionable. C. The production of a device must be approved by FDA. D. The promoters usually just care about profits. 3. FDA. can ask for the proof of safety and effectiveness of a product _____. A. if it is a drug B. if it is a device C. if its consumers make complaints D. if its distributors challenge FDA's authority 4. The Relaxacisor is mentioned as _____. A. a product which was designed to produce electricity B. a product whose distributor was involved in a legal case C. a successful advertisement of a beauty productD. an example of a quality beauty product 5. The author intends to _____. A. make consumers aware of the promoters' false promisesB. show the weakness of the law on product safety C. give advice on how to keep young and beautiful D. introduce the organization of FDA.