D．Dolly has more genes from the Blackface ewe than the Finn Dorset ewe

答案　A　[推理判断题。根据最后一幅图画". . . the pregnant Blackface ewe gives birth to a baby Finn Dorset lamb，named Dolly，that is genetically identical to the original donor. "可知，该句中的original donor指的就是the Finn Dorset ewe。]

4．What is the attitude of the author towards producing clones of people?

A．Supporting. B．Optimistic.

C．Neutral. D．Doubtful.

答案　D　[观点态度题。根据第一段中的"Scientists will be able to do these things-but should they？"可知，作者对克隆人的观点是持怀疑态度的。]

The United States government has decided that food from cloned cattle，pigs and goats is safe to eat. The Food and Drug Administration also says it found no risks in meat and milk from cloned animals.

The F．D. A. looked at studies for several years before it announced its decision in a final report this month. The United States Department of Agriculture supported the findings. But it says time is needed to smooth the way for marketing meat and milk from clones.

The F．D. A. will not require any product to be registered(注册)as coming from clones. A producer would need to label(标注)a product"clone­free"．The agency(机构)says that could be misunderstood because the food is not different from other food.

But activists argue that the F．D. A. based its decision on incomplete research into possible risks. The Center for Food Safety criticized the use of studies supplied by cloning companies. Animal rights activists point out that cloning attempts often fail. They say cloning is cruel and can lead to suffering.

Congress (国会) has been trying to get the F．D. A. to do more studies. But the agency noted that experts in New Zealand and the European Union had come to the same findings about the safety of food from clones. Japan，South Korea and Taiwan say they want to study it further before taking action.

Products from cloning may not be widely used for several years. Clones are costly，which is why they are not widely used for breeding. The Agriculture Department says few clones will ever become food. Their traditionally raised animals