Do you like dolphins

Do you like dolphins
Do you like Dolphins? Dolphins live 1 water, but they are not fish. They are mammals (哺乳动物) that live in water. It has to breathe (呼吸) air to the top of the water very often. A dolphins nose isn't 2 to see. It's just a very small hole 3 top of the dolphin's head. This hole is called a blowhole. A dolphin 4 up every minute or so to breathe. It opens blowhole and takes air in, and then goes back into the water again. It can stay 5 the water for six or seven minutes if it has to. A dolphin's ears are very small, 6 its mouth is very 7 . It has almost one hundred teeth. A dolphin 8 very fast. Scientists are studying ways to 9 boat go faster through the 10 .
( )1. A. under B. above C. on D. in
( )2. A. fast B. good C. difficult D. easy
( )3. A. above B. at C. on the D. on
( )4. A. runs B. walks C. comes D. goes
( )5. A. under B. on C. up D. at
( )6. A. so B. but C. or D. if
( )7. A. nice B. good C. big D. small
( )8. A. walks B. runs C. swims D. goes
( )9. A. talk to B. tell C. ask D. make
( )10. A. water B. land C. room D. air