Animals think much ____ building their houses.A: asB: duringC: whileD: because

Passage Four

Most people do not think of fishes and other sea animals as having voices, and of those who are aware of the fact that many of them can "speak", few understand that these "conversations" have significance. Actually, their talk may be as meaningful as much of our own. For example, some sea animals use their "voices" to locate their food in the ocean expanses (广阔的区域); others use their "voices" to let their fellows know of their locations; and still others, as a means of obtaining mates. Sometimes, "speaking" may even mean the difference between life and death to a sea animal. It appears in some cases that when a predator (食肉动物) approaches, the prey (被捕的动物) depends on no more than the sounds it makes to escape.

Fish sounds are important to man, also. By listening to them, he can learn a great deal about he habits of creatures that make them, the size of the School they form, the patterns of their migrations, and the nature of the environments in which they live. He can also apply this nformation to the more effective utilization of the listening spots he has set up to detect enemy submarines (潜水艇). A knowledge of fish sounds can avoid confusion and unneeded effort when a "new" sound is picked up and the sound sentry (哨兵) must decide whether or not to call an alarm.

46. Among the people who know that many sea animals have voices, few ______.

A. know the meaning of their conversations

B. realize that they can communicate with each other

C. realize that they can make speeches

D. could understand their conversations

Why do Westerners love their pets so much, almost as if they were their children？ I suppose one reason is that for more than one hundred years many children's books in England and in America were animal stories.By this we mean stories that gave the animals human names, human voices, human emotions, and even faces that look almost human.Many of these stories taught a moral lesson, like honesty or kindness or hard work.My mother read animal stories to me as a child, and my wife and I read some of the same animal stories to my boys when they were small, and now they read animal stories to their children.Some are the same stories about dogs and cats and rabbits and horses.So children in America grow up with good feelings toward animals. Many families would like to have a purebred dog or cat, that is an animal whose parents come from a single kind of animal.But purebred animals are expensive.And those that are registered with a special dog or cat club are even more expensive since there is a written record of their ancestors for many generations.What often happens is that a family's first pet will come from some friend whose pet has had babies.Or they may get a pet from an animal shelter.Every city and many smaller towns have a humane society which cares for animals that are found and for animals which people no longer want.They try to find the owner of lost pets and to find homes for the others.Over the years my wife and I and our children have gotten some very nice dogs for our family from animal shelters, usually at no cost.

But some families do not want a house dog or a house cat.They want an outside dog or cat.So the animal stays outsides the house most of the time.Special dog houses are made for such dogs to use, especially at night in the colder parts of North America.

1.Why do Western people love their pets so much？ ()

A.Because their children don't have many friends.

B.Because they have leisure time and enough money.

C.Because they are influenced by animal stories.

D.Because they regard pets as their children.

2.Since they have heard a lot of animal stories, American children tend to () .

A.love animals when they grow up

B.treat animals rudely

C.live with animals

D.dislike animals

3.A purebred dog refers to a dog()

A.which is brought up by one family

B.whose parents come from the same area

C.whose parents belong to the single kind of dog

D.which is bred in a pure house

4.How do most Americans get their first pet？ ()

A.They buy it from a pet shop

B.They pick up one from the street

C.They always get one from the animal shelter

D.They get it from their friends

5.Not all pets stay with their masters in the house all the time for().

A.it's good for them to stay outside

B.people think they are dirty

C.Some people don't want a house dog or a house cat

D.they don't like to stay in their masters' house

pect, extremists of this kind think that animals lie outside the area of moral choice.

Men differ from animals ____ they can think and speak.

A. for which B. for that C. in that D. in which

A. The more animals… the less serious effect

B.The fewer animals… the more serious effect

C.The less animals… the much serious effect

D.The more animals… the more serious effect

D

There are an extremely large number of ants worldwide. Each individual （个体的） ant hardly weigh anything， but put together they weigh roughly the same as all of mankind． They also live nearly everywhere， except on frozen mountain tops and around the poles. For animals their size， ants have been astonishingly successful， largely due to their wonderful social behavior.

In colonies （群体） that range in size from a few hundred to tens of millions， they organize their lives with a clear division of labor. Even more amazing is how they achieve this level of organization. Where we use sound and sight to communicate， ants depend primarily on pheromone （外激素）， chemicals sent out by individuals and smelled or tasted by fellow members of their colony. When an ant finds food， it produces a pheromone that will lead others straight to where the food is. When an individual ant comes under attack or is dying， it sends out an alarm pheromone to warn the colony to prepare for a conflict as a defense unit.

In fact， when it comes to the art of war， ants have no equal. They are completely fearless and will readily take on a creature much larger than themselves， attacking in large groups and overcoming their target. Such is their devotion to the common good of the colony that not only soldier ants but also worker ants will sacrifice their lives to help defeat an enemy.

Behaving in this selfless and devoted manner， these little creatures have survived on Earth， for more than 140 million years， far longer than dinosaurs. Because they think as one， they have a collective （集体的） intelligence greater than you would expect from its individual parts.

根据材料回答68-71题。 We can learn from the passage that ants are ____________.

A.not willing to share food

B.not found around the poles

C.more successful than all other animals

D.too many to achieve any level of organization

Small as it is，the ant is as much a creature as___（be)all other animals on earth.

A.salt and sugar

B.grain foods

C.wild animals tresh wild vegetables and truits

D.mik and other dairy products

What made scientists think animal can be made to work for us one day？

A．Animals are very skillful at a circus.

B．They are big and strong.

C．Some animals are as clever as human beings.

D．Animals can be trained because they like to get something as a reward.