Dolphins are not fish. They are mammals (哺乳动物).They live in groups and speak to each other in their own language. But they are quite different from almost all land animals. Their brain(大脑)is as big as men's and they live a long life at least 20 or 30 years.
Like some animals, dolphins use sounds to help them find their way around. They also use these sounds to talk to each other and to help them find food. They do not use their ears to receive sounds,but use the jaw--the lower part of the mouth.
It is strange that dolphins are friendly to men, and for thousands of years, there are many stories about dolphins and men. In the 19th century, in a dangerous part of the sea near New Zealand,there was a dolphin. The seamen liked him very much and gave him a very good name, Jack. From 1871 to 1903 ,Jack met every boat in the area and showed it the way. In 1903 a passenger on a boat with the name of The Penguin shot and hurt Jack. Luckily the dolphin didn't die, and after a long time he was well again. He guided the ships through the area for nine more years, but he refused to help the boat of the Penguin.
Today, some people still kill dolphins, but many countries in the world now protect them. In these places, people are not allowed to kill them.
【小题1】The word "jaw" means_________in Chinese.

Dolphins are not fish. They are mammals (哺乳动物).They live in groups and speak to each other in their own language. But they are quite different from almost all land animals. Their brain(大脑)is as big as men's and they live a long life at least 20 or 30 years.

Like some animals, dolphins use sounds to help them find their way around. They also use these sounds to talk to each other and to help them find food. They do not use their ears to receive sounds,but use the jaw--the lower part of the mouth.

It is strange that dolphins are friendly to men, and for thousands of years, there are many stories about dolphins and men. In the 19th century, in a dangerous part of the sea near New Zealand,there was a dolphin. The seamen liked him very much and gave him a very good name, Jack. From 1871 to 1903 ,Jack met every boat in the area and showed it the way. In 1903 a passenger on a boat with the name of The Penguin shot and hurt Jack. Luckily the dolphin didn't die, and after a long time he was well again. He guided the ships through the area for nine more years, but he refused to help the boat of the Penguin.

Today, some people still kill dolphins, but many countries in the world now protect them. In these places, people are not allowed to kill them.

1.The word "jaw" means_________in Chinese.

2.How do dolphins find their way?

3.Who was Jack?

4.The dolphin guided the ships for about________.

5.According to the passage, which of the following is NOT right?

Dolphins are not fish. They are animals. They live in groups and speak to each other in their own language. But they are quite different from almost all land animals. Their brain is as big as men’s and they have a long life-at least 20 or 30 years.

Like some animals, dolphins use sounds to find their way around. They also use those sounds to talk to each other and to help them find food. They do not use their ears to receive sounds, but use the jaw-the lower part of the mouth.

It is strange that dolphins are friendly to men, and for thousands of years, there are many stories about dolphins and men. In the 19th century, in a dangerous part of the sea near New Zealand, there was a dolphin. The seamen liked him very much and gave him a very good name, Jack From 1871 to 1903, Jack met every boat in the area and showed it the way. In 1903 a passenger on a boat with the same of The Penguin shot and hurt Jack. Luckily the dolphin didn’t die, and after a long time he was well again. He guided the ships through the area for nine more years, but he refused to help the boat The Penguin.

Today, some people still kill dolphins, but many countries in the world now protect them. In these places, people are not allowed to kill them.

1．The word jaw means ______ in Chinese

A．嘴巴                      B．胡须                       C．嘴唇                      D．下鄂

2．How do dolphins find their way?

A．They use sounds to find the way                  B．They use their ears to hear the sounds

C．They use their eyes to see the way               D．They use their brain to hear the sounds.

3．Jack is the name of _______

A．the writer               B．a seaman                 C．a dolphin                 D．a passenger

4．The dolphin guided the ships for about ______

A．32 years                 B．41 years                  C．9 years                   D．40 years

5．According to the passage, we have learned that ________

A．dolphins don’t live in groups

B．dolphins are not a kind of fish

C．dolphins are kind but dislike the humans

D．dolphins are unfriendly to humans.

Lake Victoria is the largest lake in Africa. It is also the second largest lake in the world. It is an important lake because it is one of the sources(源头) for the longest river in the world, the Nile River. Lake Victoria provides a source of water, food, and power(电力) for several African countries. Lake Victoria is a big part of African life.

Unfortunately, Lake Victoria has a problem. It is shrinking. There are several power stations at Lake Victoria in Uganda. These are on the Nile River, and besides producing power, they keep the water of the lake at a certain level. For the past forty years, that level has been 11.9 meters. Over the last several years, the water level has dropped by about 2.5 meters. There seem to be several reasons for this drop.

One possible reason is drought(干旱). Drought has been very bad in the area since 2000. Lake Victoria gets all of its water from rain, so the drought means less water in the lake.

However, some environmentalists believe that the real problem is the power plants(工厂) on Lake Victoria. Uganda depends on those power plants for most of its power, and they made the power plants larger in 2000. Many people believe the power plants have been taking too much water off Lake Victoria. As a result, they have been asked to use less water until Lake Victoria goes back to its old level.

Whether the low water level is caused by drought or power plants, the result is the same. This is already a poor area of Africa, where many people live a really hard life. People, animals and plants around Lake Victoria will suffer even more from low water levels on the lake. Many people need Lake Victoria for fishing or growing food. Fish need the water to live, and animals need it for water. Plants around the lake will die without the water, and then more animals and people will suffer. Unless the lake fills soon, many people will suffer and die.

1.Lake Victoria is __________.

A．an important lake in Africa

B．the largest lake in the world

C．the source of water, food and power for America

D．the only source for the Nile River

2.What does “It is shrinking” most probably mean?

A．It is becoming larger.

B．It is becoming more beautiful.

C．It is becoming smaller.

D．It is becoming more useful.

3.The water level of Lake Victoria is now __________.

A．2.5 meters        B．11.9 meters        C．14.4 meters        D．9.4 meters

4.Which of the following is NOT true according to the passage?

A. Rain water is the only source for the lake.

B. There has been little rain in the lake area since 2000.

C. The power plants in Uganda provide water for the lake.

D The power plants in Uganda were made larger in 2000.

5.According to the passage, how can we solve the problems around Lake Victoria?

A．People must build more power plants.

B．More sources of water must be found.

C．Every country should offer some money to Africa.

D．All the people living in the area should move to another place.