LostaGermanDogAddress:Stoneywo-优题课

Scientists recently found three animal species living two miles below the surface of the Mediterra-nean Sea, where the super-salty waters don't have oxygen. They're multicellular (多细胞的），which means their bodies have many cells. They each are as small as a large grain of sand. But they are animals.
The most exciting thing about these creatures, say the scientists, is that they obviously don't need oxygen to live. What biologists know about life so far is that only single-celled living things can live in places that have no oxygen, and that multicellular organisms (有机物）can visit these places，but not live there. These newly found creatures could change that idea.
Finding animals down there was so surprising that the scientists couldn't believe it. “At first, we thought they were dead bodies, ” Roberto Danovaro ,a scientist at the Polytechnic University of Marche in Ancona, Italy, told Science News. To find out whether the animals could actually live there, Danovaro and his colleagues brought up more samples from the ocean floor. Studying the animals in the new samples showed that they appeared to be alive.
The researchers did more tests, and found that some of the animals had eggs—which suggests they were reproducing. Also in the samples were old skins, suggesting that the animals had lived there long enough to grow. Finally, pictures taken showed that the insides of the animals appear to adapt to living in an environment that has no oxygen.
These clues suggest the animals don't need oxy-gen, but the evidence is indirect, which means that scientists still have not observed how the animals live without oxygen. This means more studies are needed, but the scientists think they're on the right track. And if they're right, biologists will need to rethink what they know about where animals live.
What excited the scientists most is that __________.

A．they found three animal species visit the salty water under the Mediterranean Sea

B．single-celled animals can live in super-salty waters

C．the tiny animals have many cells

D．three kinds of animals can live in places that have no oxygen

The underlined phrase in Paragraph 2 means the scientists could think __________.

A．only single-celled creatures don't need oxygen to live

B．multicellular animals can visit the super-salty waters

C．the newly found creatures can't live in the super-salty waters

D．multicellular animals can also live without oxy-gen besides single-celled ones

Which of the following CAN'T be used to prove the newly found creatures can live in super-salty waters?

A．Their dead bodies are found there.

B．Some in the samples have eggs.

C．Some old skins are found in the samples.

D．The pictures of their insides have been taken.

More studies are needed to prove __________.

A．where single-celled animals can live

B．how the newly found animals live without oxy-gen

C．whether the multicellular creatures can live underwater

D．why the super-salty waters have no oxygen

There's no end of dangerous sports to try out in Southern Africa — bungee jumping, skydiving, water rafting. But for a new rush, how about swimming face to face with a killer shark?
The public seems interested in finding danger in this activity. Cape Town's aquarium has been filled with divers who want to swim with the sharks since it opened its tanks to paying visitors last month. Around70 tourists aged between 12 and 40 have paid 275rand (US $55) each to spend up to an hour with Maxine，Dee and Floyd, the aquarium's three sharks.
And conservationists say the project should help change the damage done to the shark's image by the popular movie Jaws.
“People will always pay money to be a bit daring, ”said Paul Loetter , an aquarium diver. “Most people think every shark is dangerous, but they've got the wrong idea. ”
Each visitor can swim with the sharks and other fish that share their tank, guarded by aquarium divers armed only with a stick to keep off any over-friendly sharks.
“This is part of a communication and education programme to show sharks are not as bad as everyone makes out, ”said Tony McGyre , operations manager at the aquarium.
Len Compagno , head of the South African shark research center, agreed. "It's no joke to play around with a big dog. In the same way, a three-metre-long shark could put a few holes in you，" he said.
We may infer that in the movie Jaws __________.

A．sharks are hunted everywhere

B．sharks kill other sea animals

C．sharks are disappearing in the sea

D．sharks are man eaters

What Len Compagno said really means that __________

A．you had better be careful when you get close to sharks

B．you needn't be too serious about sharks

C．sharks are more dangerous than big dogs

D．sharks are as friendly to people as dogs

The writer's purpose in writing the passage is to tell us that __________

A．sharks are not as bad as everyone makes out

B．people will always pay money to be a bit daring

C．there's no end of dangerous sports in Southern Africa

D．the public seems interested in finding danger in swimming with a killer shark

We can learn that Maxine , Dee and Floyd are __________

A．workers in the aquarium

B．the aquarium's three sharks

C．conservationists

D．divers in the aquarium

Dolphins are not fish, but warm-blooded animals. They live in groups, and speak to each other in their own language. In this they are like other animals, such as bees and birds. But dolphins are very different from almost all land animals. Their brain is nearly the same size as our own, and they live a long time—at least twenty or thirty years.
Like some other animals, dolphins use sound to help them find their way around. They also make these sounds to talk to each other and to help them find food. We now know they do not use their ears to receive these sounds, but the lower part of the mouth, called the jaw.
Strangely, dolphins seem to like man, and for thousands of years there have been stories about the dolphin and its friendship with people. There is a story about sailors in the 19th century. In a dangerous part of the sea off the coast of New Zealand, they learnt to look for a dolphin called Jack. From 1871 to1903 Jack met every boat in the area and showed it the way. Then in 1903 a passenger on a boat called The Penguin shot and wounded (伤害）Jack. He re-covered and for nine years more continued to guide all ships through the area—except for The Penguin.
Today, some people continue to kill dolphins, but many countries of the world now protect them and in these places it is against the law to kill them.
Dolphins are different from many other animals in that they __________.

A．live in groups

B．have large brains

C．are warm-blooded

D．have their own language

Why did the sailors off the coast of New Zealand look for Jack?

A．He was lonely and liked to be with people.

B．They enjoyed playing with him.

C．He was seriously wounded.

D．They wanted his help.

By telling the story of Jack the writer wanted to show that __________.

A．dolphins are friendly and clever

B．people are cruel to animals

C．Jack is different from other dolphins

D．dolphins should be protected by law

Many views are held as to whether or not sharks will attack man. Some people believe that a shark will attack man only when he is near the shark in the wa-ter. Others take the position (见解）that sharks never attack man. The facts show that the truth is between these two positions.
There are thirty-two kinds of sharks, and only three are dangerous to man. These are the hammer head shark, the tiger shark, and the white shark. All sharks are easily frightened and are much more afraid of man than man afraid of them. They have a keen(敏锐的）sense of smell even from a place that is a fairly long way away. The smell of blood excites them, then they may attack human beings.
If such an attack does take place，however , it is done blindly because the shark
happens to be excited by the smell of blood. This is very different from the manner in which a lion or a tiger will attack its victim(受害者）in the woods. The one acts without thinking while the other acts with the greatest care.
What is the best title of the passage?

A．Sharks and other animals

B．Sharks' attack on man

C．Why does blood excite sharks

D．Sharks, the most dangerous of all the fishes

The main difference between the manner in which a lion attacks its victim and a shark attacks a man is __________

A．in the speed of the attack

B．that the lion is careful with the attack, but the shark acts without thinking

C．that the lion is more cruel than the shark

D．that the shark's attack is less sudden

From the passage, we learn __________.

A．none of the sharks are dangerous to man

B．all kinds of sharks aren't afraid of man

C．there are only two views of sharks' attack on man

D．the writer of the passage agrees to the two views

Why does a shark attack a man blindly?

A．The shark is easy to be frightened.

B．The shark has a keen sense of smell.

C．The shark has just been excited by the smell of blood.

D．The shark always protects itself by attacking the others.

“The noise made by boats of whale watching tourists may be causing communication problems for the animals, "British researchers said last week.
Whale watching is a popular tourist activity in places where groups of killer whales (虎鲸）live. Every day, dozens of boats filled with tourists go to watch the beautiful animals. Unfortunately, the engines of the boats make a lot of noise，and that may cause problems for the whales, according to a report in the US science magazine Nature.
The whales travel in groups, and communicate with each other through sonic (声波的）calls that some scientists refer to as singing. The sounds of the boat engines may be creating too much background noise for the whales to be able to hear each other.
The researchers listened to recordings of whale calls made between 15 and 25 years ago, before whale watching became popular. These were com-pared to more recent recordings.
They found that the animals have started to sing for longer than they used to, like a person shouting to a friend across a noisy room.
It is believed that the whales are trying to communicate hunting or breeding (繁殖）information. Scientists said that, if this is prevented, the future of the world's whale population could be in danger.
"Animals become slow in mind and repeat them-selves in noisy areas，" said Volker Deecke , a Canadi-an biologist. “They have to say things twice or three times in order to be understood. ”
The killer whales studied were living off the coast of northwestern America. The number of killer whales in this area has been falling for several years, but scientists are not sure why.
The passage mainly tells us __________.

A．the problems of whale watching

B．how killer whales communicate with each other

C．the reduced population of killer whales caused by whale watching

D．hearing problems of the killer whales caused by whale watching

Now in a noisy background, the killer whales have to __________

A．sing in a louder voice

B．sing longer

C．travel in smaller groups

D．get nearer to each other

Scientists believe that killer whales sing to __________

A．warn each other of dangers

B．keep in the same group

C．send useful information

D．enjoy themselves

From the passage, we can feel that the author is __________.

A．angry

B．hopeful

C．worried

D．disappointed

Which of the following is the possible result of whale watching?

A．Fewer fish in the ocean.

B．Misunderstanding between the whales.

C．Reduced number of the whales in the area.

D．Serious water pollution along the coast.