$III.$ Reading the following passage and choose the option (A, B, C or D) that best answers each of the questions below. 
 Dolphins are mammals that live in the ocean. Mammals are different that fish, reptiles or birds. As a mammal, dolphins breathe oxygen, even though they live in water. Because they are mammals, a dolphin mother gives birth to a live baby, unlike reptiles and birds who lay eggs. A dolphin mother also feeds her baby milk like other mammals. 
$1.$ What is the text about? 
A. A dolphin is a mammal.      B. Dolphin is a fish. 
C. A dolphin mother loves her baby.   D. Dolphins live in water. 

_ Dẫn chứng : Dolphins are mammals that live in the ocean. _
$2.$ Where do dolphins live? 
A. In the forest.   B. In the sea   C. In the land              D. In the air 

_ Dẫn chứng : Dolphins are mammals that live in the ocean. _
$3.$ What do dolphins breathe in? 
A. Reptiles   B. Oxygen   C. Milk      D. Water 

_ Dẫn chứng : As a mammal, dolphins breathe oxygen, even though they live in water. _
$4.$ What do female dolphin lay? 
A. Birds    B. Reptiles   C. Baby dolphin    D. Eggs 

_ Dẫn chứng : Because they are mammals, a dolphin mother gives birth to a live baby, unlike reptiles and birds who lay eggs. _
$5.$ How does a dolphin mother feed her baby? 
A. By hunting small fish for the baby   B. By feeding the baby water
C. By collecting seaweed for the baby   D. By feeding the baby milk

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