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متن زیر را خوانده و به سئواالت به صورت خواسته شده پاسخ دهید (نمره 3.
( Dolphins are among the smaller whales. Most live in salt water oceans, but some live in rivers. There are oceanic dolphins and river dolphins. Dolphins are from 1.5 meters to 4 meters long, but the largest dolphin, the killer whale, can be up to 8 meters long. It is now known to be a mammal, and quite an intelligent mammal. Dolphins breathe air. A dolphin’s nose is on top of his head so the dolphin can easily breathe on the surface of the water. The skin of a dolphin has no scales. It is soft and smooth. They are very social and help each other fight off sea hunters. They have fought off sharks in this way. They look after the young, when the mothers need to leave them to hunt for food. The young need to breathe more often than the adults, and the food may be in deeper waters.
1. A few dolphins live in salt water oceans. ( true or false )
2. A dolphin is a mammal. ( true or false )
3. A dolphin has a hard skin. ( true or false )
4. Dolphins never fight off sharks. ( true or false )
5. Where is a dolphin’s nose?
6. Are they among clever animals?
(2 نمره)