Here are some of the fastest animals in the animal world. Let me tell you that a man can run 20 to 25 miles an hour.
Heavy people can not run very fast. But some heavy animals can.Black rhinos are more than 3,500 pounds. They can run almost 30 miles an hour. Cheetahs are the fastest land animal over short distances(距离).They can run over 70 miles an hour. But they get tired quickly and usually stop after a few minutes.Pronghorn antelopes are the fastest animals over long distances. They can run 35 miles an hour for many miles. Their top speed is more than 50 miles an hour.Ostriches can’t fly, but they can run faster than other birds. They can run 43 miles an hour for a short distance. And can keep up a speed of more than 30 miles an hour over long distances.
How heavy may a black rhino be?

A．More than 4,500 pounds.

B．More than 3,500 pounds.

C．2,000 pounds.

D．1,500 pounds.

What are the fastest land mammals over short distances?

A．Cheetahs.

B．Pronghorn.

C．Horses.

D．Elephants.

The top speed of pronghorn antelopes may be over _______ miles an hour.

A．20

B．30

C．35

D．50

Ostriches can run more than _______miles an hour over long distances.

A．50

B．43

C．35

D．30

Which is the best title for this passage?

A．The biggest birds.

B．What animal has the largest eggs.

C．The fastest animals.

D．The land mammal.s