market. But if the product is a device， FDA has no authority to require premarketing proof of safety or effectiveness. If a product already on the market is a danger to health， FDA can request the producer or distributor to remove it from the market 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， which had been sold for reducing the waistline. The Relaxacisor produced electrical shocks to the body through contact pads. FDA took legal action against the distributor to stop the sale of the device on the grounds that it was dangerous to health and life.

　　Obviously， most of the devices on the market 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 judge the safety or effectiveness of such items.

6. It can be inferred that the ads mentioned in the text are ＿＿＿.

　　A. objective B. costly

　　C. unreliable D. illegal

7. Which of the following is TRUE according to the text？

　　A. The court is in charge of removing dangerous products.

　　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.

8. 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

9. 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 product

　　D. an example of a quality beauty product

10. The author intends to ＿＿＿＿.