Mr Green 一家打算去海南度假，他们准备在那待上一周，他们计划去海边散步，去海里游泳,吃海鲜，并且还可以交到很多好朋友。虽然那里的天气很热，但是海南的确很美，他们将度过一个轻松愉快的假期。
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 clever. They may be more clever than dogs. So pigs can learn things from people. Pigs are very friendly animals. Some people raise(收养) them as pets. Of course, people keep the small kind, not the big kind . ...
（ ）1.Which of the following is true?
a.Pigs like to be dirty. b.People can teach pigs things. c.Only farmers raise pigs.
（ ）2.What does the underlined words“In the eild”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.The kind from farms d.The small kind