单项选择题

The author of this article maintains ______.

A．pigs are not very intelligent
B．the owners of pet pigs have their own society
C．pigs can never be popular
D．pigs live short lives because of their diet

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热门试题

单项选择题

One may assume from this article that pigs ______.

A．have remained unchanged for centuries
B．are naturally vicious animals
C．make a significant contribution to modem life
D．are better than any other animal for laboratory

单项选择题

Some anatomical features of a pig are similar to those of a human. Therefore, ______.

A．pigs can live as long as people
B．pigs are becoming popular as movie and TV stars
C．medical research on pigs helps humans
D．pigs and people naturally get fat