The ocean contains many strange and surprising creatures. One such creature is the puffer fish. This very strange fish is probably the most poisonous creature in the ocean. The poison that this fish produces is 275 times more poisonous than the chemical which is usually used to kill rats.
The puffer fish gets its name from the way the fish protects itself from enemies. Whenever it is attacked, the fish blows up its body to three times bigger than its normal size!
Another strange thing about this fish is the fact that it can swim like other fish. Because it does not have bones like other fish, the puffer fish can only move slowly through the water as it is carried by waves.
The puffer fish also has funny teeth. These teeth stick out of the fish’s mouth and are used by the fish to open the shells of the creatures that live on the ocean floor.
This strange, ugly, and very poisonous fish is actually a very expensive kind of food in Japan. The Japanese call this fish “fugu”, and people have been known to pay $150 per person to eat a fugu meal (usually eight servings)!
Very brave people want to eat the most poisonous part of the fugu fish on purpose. They think that this part of the fish tastes the best! Strict laws have been passed to control restaurants which serve fugu; however, quite a few people have still died from eating fugu.Almost 200 people have died over the past 25 years.
When people eat fugu poison, they do not die on the spot. First, they feel a strange tickle on their lips and in their mouth. Then they can not feel anything with their fingers. Finally, they cannot move or speak. Death follows when they can no longer breathe. The poison may take only a few minutes or up to six hours to kill a person. There is no known cure for fugu poisoning.
According to the passage, the puffer fish       .

A．is probably the most poisonous creature in the world

B．is generally considered to be the strangest fish in the ocean

C．is slightly more poisonous than the chemical used to kill rats

D．is without doubt a deadly creature if it is not eaten properly

Why do people think that the puffer fish is strange when it is attacked by an enemy?

A．It becomes bigger.	B．It has funny teeth.
C．It gives off poison.	D．It can swim swiftly.

The underlined expression “on the spot” in the last paragraph is closest in meaning to      .

A．now and then	B．once in a while
C．then and there	D．sooner or later

Who is allowed to serve fugu according to the passage?

A．The Japanese government.	B．Licensed restaurants.
C．Strict lawyers in Japan .	D．Very brave people

Which is NOT a symptom of fugu poisoning?

A．Having difficulty breathing.	B．Having no sense of touch.
C．Having no sense of taste.	D．Having trouble speaking.