题目内容：

What do you think of black cats？Are they unluckier than cats of other colors？Many people in Western countries think so．Scientists at the University of California，Berkeley （UC Berkeley），did a study on cat colors and people's understandings of cat personalities．

The study found that people do judge（判断） cat personalities by color．Scientists did a survey on the Internet．There were 49statements （描述） matching five cat colorings with 10personalities．People think orange and bi-colored （双色的） cats are friendly，tri-colored （三色的） cats are not generous，and white cats are calm，lazy and shy．As for black cats，people think they don't have special personalities．

But why do so many people dislike keeping black cats as pets？People think black cats have less special personalities，which might be because of their bad reputation （口碑）．They think black cats may bring bad luck，especially at Halloween．Movies and television shows also make people believe that．

Although people have these ideas，UC Berkeley scientists give another reason：people don't think black cats are pretty enough．After all，nothing can show black cats are unluckier than other cats．"You can't judge a cat by its color，because it's the personality of the cat，not the color，that will let you know if the cat is right for you，"Cathy Marden，a scientist said．

1.Many people in Western countries may think black cats are ______ ．

A. lovely animals    B. a sign of bad luck

C. a sign of good luck    D. unfriendly animals

2.The main idea of paragraph 2is that ______ ．

A. people often complain about black cats on the Internet

B. people think cats of different colors have different personalities

C. black cats are less popular than other cats

D. the study is a great success

3.According to the study，people think that ______ ．

A. black cats have special personalities

B. orange and bi-colored cats are generous

C. cats with three colors are friendly

D. white cats are calm，lazy and shy

4.People don't like black cats for the following reasons EXCEPT ______ ．

A. black cats often appear in TV shows

B. black cats bring bad luck to people

C. black cats have bad reputations

D. they don't think black cats are beautiful

5.The passage mainly talks about ______ ．

A. why black cats are popular in movies

B. why people are not willing to keep black cats as pets

C. different color cats have different personalities

D. different people have different ideas on black cats．