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   Many people have the wrong idea about pigs．Pigs are actually very clean animals. On farms，they live in dirty places．So，they become very dirty．In the wild，pigs keep very clean．

   They are also really smart．They may be smarter than dogs．So，pigs can learn things from people．Pigs are very friendly animals．Some people raise(喂養)them as pets．Of course．people keep the small kind，not the big kind．Small pigs are very cute．And they don’t break things in the house．Big pigs usually live outside on farms，not in people’s houses．

1．Which words can describe pigs?

    A．Dirty and stupid                  B．Nervous and strange

    C．Dangerous and unfriendly      D．Clever and friendly

2．What does“in the wild”mean?

    A．On farms                    B．In nature

    C．Being crazy                   D．In people’s houses

3．Which of the following is TRUE?

    A．Pigs like to be dirty             B．People can teach pigs things

    C．Dogs are smarter than pigs    D．Only farmers raise pigs

4．What kind of pigs are raised in people’s houses?

    A．The very big kind               B．The ugly kind

    C．this kind from farms             D．The small kind

5．What is NOT mentioned(提及)in this passage?

    A．Raising clogs               B．pigs on farms and in the wild

    C．Pigs as pets                   D．People’s wrong ideas about pigs