阅读下面短文，然后按要求完成下列各题。

　　The Year of the Dog has gone and this year we have pigs．What words can we think of for pigs? Some(A)________ words maybe, like silly, dirty, greedy(贪婪)…But, are these true?

　　When we see pigs, they are usually in dirty water or behind dirty fences．But pigs also want to be clean if they can．Pigs have no sweat glands(汗腺), so they have to get cool in water when they feel hot．

　　If people are greedy, we say they“pig out”．Yes, pigs love eating a lot．But they are useful to people．People not only eat their meat, but also use other parts of pigs．Pig skin is used for glue and shoes．(B)The hair can be used to make brushes．Sometimes, pigs are even used to make medicine．

　　“(C)他像猪一样傻!”This expression is wrong．Pigs are very smart animals．Among all animals, they are the third cleverest－monkeys, dolphins and pigs．Scientists think the training of pigs is easier than the training of dogs and cats．Pigs have a very good sense of smell(嗅觉)．They can find things nearby or faraway．They can also help the police to(D)sniff out drugs(毒品)at an airport or at a train station!

1．在画线部分(A)处填入一个适当的词：________

2．将画线部分(B)改写为：The hair can be used ________　________ brushes．

3．将画线部分(C)译成英语：________________

4．将画线部分(D)译成汉语：________________

5．在文中找出三个描写猪的形容词：________