英语完形填空Many of us may see dolphins in the zoo.They are __36__

英语完形填空
Many of us may see dolphins in the zoo.They are __36__animals.They can learn to do __37__things to make people happ.People__38__ them how to swim with people__39__
their backs.They are also friendly animals.Sometimes they__40__people swim with them.Usually it's not dangerous to play with dolphins.__41__we need to know ,some dolphins are not nice like others.
dolphins__42__food by sound.They make a sound,and when the__43__comes back,they can know where the __44__ is.
dolphins in the zoo help people learn more about their __45__.From dolphins,we can learn more about life in the sea.
36.A.clever B.dangerous C.beautiful D.scary
37.A.kind B.kind of C.kinds D.kinds of
38.A.enjoy B.teach C.see D.help
39.A.of B.at C.on D.with
40.A,like B.want C.let D.ask
41.A.But B.So C.And D.If
42.A.eat B.find C.buy D.visit
43.A.dolphin B.water C.sound D.leaf
44.A.grass B.food C.shop D.restaurant
45.A.work B.story C.news D.life