If you keep a dog or a cat，do you always turn on the radio or TV when you're not in just because you don't want your pet to be lonely（孤單的）？A study shows that around 40%of the British people with dogs would like to turn the radio and that 32% would like to turn on the television.But do pets really like this？
   Sometimes dogs do respond（作出反應(yīng)） to human（人類） music.A study shows that when there is light music playing，many dogs seem to be quiet.When it comes to rock music，those dogs seem to be very excited.
   For cats，they hardly respond to human music because their hearing spectrum（頻譜） is different from that of humans，so what they hear is different from what we hear.Scientists once tried to see what would happen if they played "cat music"for the cats.They asked Professor（教授） David Teie to make special music for cats.And it showed that when they're playing it to 47 cats，some cats did respond
to it.
   So，you'd better play different music for your pets.Good news for cat lovers is that you can buy such special cat music online.David Teie once took part in the cat study and he wrote cat music for sale online.

（1）Why do some people leave the radio or TV on for their pet？

C

C

A．To do a study on pets.
B．To stop it being noisy.
C．To make it less lonely.
D．To make it love music.
（2）Which of the following is TRUE？

B

B

A．Pets like to listen to the same music.
B．Cats have little interest in human music.
C．David Teie's job is to sell things online.
D．The cat music can make people excited.
（3）What does the passage mainly talk about？

D

D

A．How can we look after pets？
B．What kind of music do dogs love？
C．Where can we buy special cat music？
D．Do dogs and cats like human music？