If you didn’t know any better, you might think that Star, Snuppy, CC and AND

游客2023-08-16 81

问题 If you didn’t know any better, you might think that Star, Snuppy, CC and ANDi were just a bunch of interesting names. You’d only be half right. These creative names【C1】______belong to a pig, a dog, a cat and a monkey that were among the first clones of their species.
You’re likely already familiar with Dolly—the sheep that achieved near【C2】______status as the first mammal to be cloned successfully using adult animal cells. But Dolly is not alone. The world’s first clone—a tadpole—was actually created as early as in 1952. And at least a dozen different species have been cloned since: everything from the common cow to the【C3】______guar, a type of wild ox.
Animal cloning has come a long way since that first tadpole more than 50 years ago. The U.S. Food and Drug Administration’s(FDA)declaration in early 2008 that food products【C4】______from the clones of cows, pigs and goats are safe for human consumption【C5】______an already growing interest in the process.
Cloning may have【C6】______uses besides its ability to help farmers【C7】______breed quality burgers and bacon. Other potential uses【C8】______the preservation of species, biomedical research, drug and organ production and even commercial ventures.
It seems that finding out exactly how many cloned animals have been produced is almost as difficult as producing them in the first place. There’s no official【C9】______of clones, and laboratories aren’t required to report every single tadpole or mouse they create. But armed with a bit of knowledge concerning animal cloning and its【C10】______it’s likely to narrow down the contestants to a possible field.
A)inclusive B)derived C)applications D)actually
E)additional F)intensified G)visualized H)celebrity
I)include J)typically K)compromise L)endangered
M)registry N)duplicates O)consistently [br] 【C1】

选项

答案 D

解析空格前后分别为句子的主语和谓语，因此空格应为副词。前一句中的half right表明本句将要说出“真正的”答案，故选actually，说明上文提到的那些名字“事实上”是几种克隆动物的名字。

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