Reading 1

Many scientists think that dolphins, closely related to whales and porpoises, are among the most intelligent animals. Humans train in captivity these friendly creatures, whish are eager to interact with them. When dolphins are well trained, they can jump through hoops, throw balls through nets, and even walk backward on the water.

Just as whales and porpoises are, dolphins are mammals. They feed their young with milk produced profusely in the mother’s body. Unlike fish, dolphins have lungs and are warm-blooded. Regardless of the temperature of the surroundings, their temperature always stays about the same.

There are about 40 species of dolphins known to exist in Earth’s oceans and freshwater rivers. But the bottle-nosed dolphin and common dolphin are much better known. Scientists have tried to understand dolphin intelligence and they have done research mainly with these two species. The bottle-nosed dolphin has a short beak. It makes the dolphin look like it is smiling. The common dolphin has a dark band down its long, narrow beak and around its eyes.

1.       The word “them” in line 3 refers to _______

a.       Scientists

b.      Animals

c.       Humans

d.      Creatures

2.       The phrase “their temperature” in line 9 refers to yhe temperature of______

a.       Fish

b.      Dolphins

c.       Lungs

d.      Surroundings

3.       The word “they” in line 12 refers to ________

a.       Dolphins

b.      Oceans

c.       Rivers

d.      Scientists