3과 Part 1 Review

An everyday action that helps us save energy can also help save an ________ species.

• standing

• beloved

• endangered

• largest

Despite being the dominant predators of their habitats, they move silently and remain _____ most of the time.

It is no surprise that tigers have been feared and worshipped by humans for centuries, standing as symbols of power and courage.

• standing as symbols of power and courage.

• for centuries,

• tigers have been feared

• and worshipped by humans

• It is no surprise that

The fact that ancient rock paintings feature images of tigers shows how _______ tigers have been related humans throughout history.

At the start of the 20th century, it _________ that there were approximately 100,000 wild tigers.

• was estimated

• estimated

In recent years, however, three of the nine subspecies of tigers have become _________.

Some experts even predict that the last of the world’s wild tigers will disappear within the next 10 years.

• predict that

• the last of the world’s wild tigers

• within the next 10 years

• Some experts even

• will disappear