填空题

The United States government wants to know what the public thinks about its findings on the safety of (36) animals.
The Food and Drug Administration says meat and milk from clones of adult cattle, pigs and goats are safe to eat. An FDA (37) called them "as safe to eat as the food we eat every day."
And when those clones (38) sexually, the agency says, their (39) are safe to eat as well. But research on cloned sheep is limited. So the FDA (40) that sheep clones not be used for human food.
The United States this year could become the first country to (41) the sale of foods from cloned animals.
First, however, the public will have ninety clays to (42) on three proposed documents. On December twenty-eighth the FDA released a long report, called a draft risk (43) , along with two policy documents.
(44) . The FDA seemed ready to act several years ago, but an advisory committee called for more research. (45) . Clones are still rare. They cost a lot and are difficult to produce. (46) Critics question the safety. Animal rights activists also have objections.