Where did the movies begin？ It is often said that they are an American invention. It is no

the ocean onto the beach, and usually dying there. No one knows why they do it, but a number of whales beach themselves every year. Some people think beaching is an accident. Perhaps the whales get confused. Scientists who studied the beaching of three dozen whales in Australia think the whales may have been confused by loud noises. Whales can tell where they are by sounds. They send out sounds and listen as they travel past or bounce off objects. Two days before these thirty-six whales beached, loud guns had been fired for two hours. The loud sounds may have confused the whales. Their confusion might have caused them to wander into low water. Whatever the reason whales beach, it is a sad event. People try to save them, but very few beached whales live. One whale that was rescued from beaching in Florida lived for forty-five days. That is the longest a beached whale has ever survived. And it lived that long only because it got attention from doctors. All over the world, scientists rush to whale beachings as soon as they hear about them. They hope to learn why whales beach, and how to save them.

The subject of this passage is______.

A．the Florida Beaches

B．Beached Whales

C．Whale Sounds

D．Medical Treatment of Whales

pecial sharp teeth with which to break their way out of the shells. Crocodiles only live where it is hot. They are found in India, Australia, Africa and America. They spend most of their time lying around in the mud or the rivers. The crocodiles long powerful tail is used when the animal is swimming. It is also an excellent weapon, because it can be swung with great speed and force. One blow will knock down a man or even a big animal at once. The crocodile is very well protected against its enemies by the hard bony plates which cover most of its body, but because of the way its neck is formed, it cannot turn its head from side to side and so it can only see in front of itself. The crocodile has its teeth cleaned by the crocodile bird. For its food this bird takes the bits left in the crocodiles mouth. This helps the crocodile, which cannot clean its own teeth, for it cannot move its tongue up and down. With its rows of terrible pointed teeth it seizes its food, which may be a fish, an animal, or even a careless human being, and then holds it below the water until it is drown to death. The long-nosed crocodile is shy and timid and because of this, the people of West Africa where it lives, sometimes catch it for food. Many, many centuries ago there were crocodiles in England. We know this because we have found their bones buried far down in the earth on which London is built. But the Britain of today is too cold for them to live in. Crocodiles may grow to over thirty feet in length. When they lie floating in the water, they look like floating tree-trunks and it is often impossible to tell that they are there.

The female crocodile______.

A．buries her eggs

B．sits on her eggs

C．carries her eggs

D．eats her eggs

n in other ways.

A. helps

B. inspires

C. prevents

D. stops

Whoever lives around that beach___find life there dreamlike.

A. would

B. need

C. shall

D. ought to

r everyone.

A. might

B. has to

C. ought

D. need

n.

A. realize

B. realized

C. have realized

D. had realized

_in our daily life.

A. option

B. goodness

C. thing

D. change

Do you know what___so much greenhouse gases in the air?

A. producing

B. has produced

C. will produce

D. produces

When you visit the room, the electronic facilities in it can___and recognize you.

A. interview

B. identify

C. instruct

D. introduce

You___have come to the concert. It was excellent.

A. may

B. need

C. ought to

D. must