We find different kinds of animals in the world. Some animals, such as   (1)    and lions, live in big forest and they are called   (2)    animals. Some others like sheep and dogs are kept by men and they are called domestic animals. These animals are very different from one another, but we can   (3)   them into big groups: those that eat other animals and those that eat grass and leaves. Animals like the tiger   (4)    to the first group   (5)    eat other animals.

Animals are   (6)    great use to human beings. Men hunt wild animals for their fur and meat. Domestic animals are   (7)    more important to men. Without them, life will be difficult. People make use of animals in many   (8)   .

Cows and pigs are useful to men’s food. They give 80% of the   (9)    men eat every year. Skin of some animals can be   (10)    into expensive overcoats and shoes, which are warm and comfortable and   (11)   a long time. They are very popular in   (12)    countries. Wool, which is now one of the most important materials for textile（纺织）   (13)   , comes from some certain   (14)   . From cows, we get   (15)   . And we shouldn’t   (16)    that some domestic animals are kept for   (17)   , for example, many people   (18)    ride horses. Arabs ride on camels that travel in deserts for days without   (19)   . In some places animals are still used to plough field.   (20)    is clear that men just can’t live without these animals.

The part of the environmental movement that draws my firm's attention is the design of cities, buildings and products. When we designed America's first so-called "green" office building in New York two decades   (1)  , we felt that we were alone. But today, thousands of people come to green building conferences, and the   (2)  that buildings can be good for people and the environment will be increasingly influential in years to   (3)  .

Back in 1984, we discovered that most products for decoration weren’t designed for   (4)  use. The “energy-efficient” commercial buildings constructed after the 1970s energy crisis   (5)   indoor air quality problems caused by materials such as paint, wall covering and carpet. So far 20 years, we’ve been focusing on these materials   (6)  to the molecules(分子), looking for ways to make them   (7)   for people and the planet.

Home builders can now use materials-such as paints that release significantly   (8)   amounts of organic compounds(有机化合物) —that don’t   (9)   the quality of the air, water, or soil. Eventually,   (10)  , our basic design strategy is focused not simply on being “less bad” but on creating   (11)   healthful materials that can be either safely returned to the soil   (12)   reused by industry again and again. As a matter of   (13)  , the world’s largest carpet manufacturer has already   (14)   a carpet that is fully and safely recyclable.

Look at it this way: No one   (15)   out to create a building that destroys the planet. But our   (16)   industrial systems are inevitably(不可避免地) causing these conditions, whether we like it or not. So   (17)   of simply trying to reduce the damage, we are   (18)   a positive approach. We’re giving people high-quality, healthful products and an opportunity to make choices that have a   (19)   effect on the world. It’s not just the building industry, either. Entire cities are taking these   (20)   positive approaches to design, planning and building. Portland, Seattle and Boston have said they want to be green cities. Chicago wants to be the greenest city in the world.

The part of the environmental movement that draws my firm's attention is the design of cities, buildings and products. When we designed America's first so-called "green" office building in New York two decades   (1)  , we felt that we were alone. But today, thousands of people come to green building conferences, and the   (2)  that buildings can be good for people and the environment will be increasingly influential in years to   (3)  .

Back in 1984, we discovered that most products for decoration weren’t designed for   (4)  use. The “energy-efficient” commercial buildings constructed after the 1970s energy crisis   (5)   indoor air quality problems caused by materials such as paint, wall covering and carpet. So far 20 years, we’ve been focusing on these materials   (6)  to the molecules(分子), looking for ways to make them   (7)   for people and the planet.

Home builders can now use materials-such as paints that release significantly   (8)   amounts of organic compounds(有机化合物) —that don’t   (9)   the quality of the air, water, or soil. Eventually,   (10)  , our basic design strategy is focused not simply on being “less bad” but on creating   (11)   healthful materials that can be either safely returned to the soil   (12)   reused by industry again and again. As a matter of   (13)  , the world’s largest carpet manufacturer has already   (14)   a carpet that is fully and safely recyclable.

Look at it this way: No one   (15)   out to create a building that destroys the planet. But our   (16)   industrial systems are inevitably(不可避免地) causing these conditions, whether we like it or not. So   (17)   of simply trying to reduce the damage, we are   (18)   a positive approach. We’re giving people high-quality, healthful products and an opportunity to make choices that have a   (19)   effect on the world. It’s not just the building industry, either. Entire cities are taking these   (20)   positive approaches to design, planning and building. Portland, Seattle and Boston have said they want to be green cities. Chicago wants to be the greenest city in the world.

Everyone needs water and a diet  (1)  healthy foods. These foods should  (2)  some fat, some fiber, a little salt and so on.

   People need energy to live. They eat all kinds of foods   (3)   change into energy. Our bodies use different  (4)  of energy. The energy is measured in calories(卡路里). The more  (5)  we take, the more calories we burn.  Even when you are  (6)  , you are using energy---about 65 calories an hour. While you are at school, or walking home, your body is  (7)  up 100 calories an hour. When playing football or basketball, you might be using 400 calories an hour. On   (8)  Day, during the relay race, you will use most of all, perhaps as   (9)  as 650 calories an hour.

   The Chinese diet is considered to be the healthiest in the world.  It contains a lot of fruit and green vegetables. It is  (10)  in fiber and low in sugar and fat. The Chinese eat less sugar than many   (11)  countries in the world. That is  (12)  lots of people in China have white teeth.

   People in the Western world do not eat  (13)  healthy foods. They eat too much fat and sugar and don’t take  (14)  exercise. Because of this, they  (15)  very easily. In order to  (16)   with the quick pace(步伐) of their life and work, they eat a lot of fast food. They eat a lot of sweets, soft drinks, potato crisps, chocolate, butter and ice cream and so on,  (17)  are called  (18)  food by some epicureans（美食家）. The result is that many of them become fat. In order to avoid  (19)   fat and  (20)  ​ it is advisable(明智的) to eat a balanced diet and not eat too many foods that have a high calorie rating.

On an airplane as she was flying across the United States, Dr. Jane Goodall noticed a woman sitting next to her. She asked the woman why she looked so    36   , and the woman said she was absolutely exhausted because she’d been up at two in the morning trying to   37    the water.

    Her young daughter was in an environmental group at school and her daughter’s passion had turned to making sure her    38    was eco-friendly. They were staying at the woman’s brother’s house the night    39    her rip, and in the middle of the night her daughter woke up to the    40    of a dripping faucet(水龙头). The daughter asked for    41    turning it off as the faucet handle was    42   . The only way to    43    the leak(裂缝) was to dig to the pipe in the front grass to find the main valve(阀) to turn the water off, and her daughter wouldn’t go to sleep    44    the leak stopped. So at two in the morning    45    in the family was out in the yard helping to    46    to turn off the water.

    Young people have much more    47    to initiate(开始，发起) and accomplish change than what    48    may believe. When children make a change in their lives, families are    49    along to become environmentally friendly.

    The story also shows that small actions can have a big effect. We   50    think about    51    events like Clean and Green Week. Instead, a lot of small changes can make a(n)    52   . If hundreds or thousands of students    53    their families to turn off the faucet to save water, move the air conditioning temperature    54    a degree or two in summer, drive less and make other environmentally-friendly changes, the    55    family may change its behaviors.   

We find different kinds of animals in the world. Some animals, such as tigers and lions live in big forest and they are called  (1)  animals. Some others like sheep and dogs are  (2)  by men and they are called domestic(驯养) animals. These animals are very different from one another, but we can  (3)  them into big groups: those that eat other animals and those that eat grass and leaves. Animals like the  (4)  belong to the first group.

       Animals are  (5)  great uses to human beings. Men  (6)  wild animals for their fur and meat. Domestic animals are  (7)  more important to men. Without them, life will be  (8)  . People make use of animals in many  (9)  .

       Cows and dogs are useful to men’s  (10)  . They give 80% of the  (11)  men eat every year. Skin of some animals can be  (12)  into expensive overcoats and shoes, which are warm and comfortable and  (13)  a long time. They are very welcome in  (14)  countries. Wool, which is now one of the most important material for textile(纺织)  (15)  , comes from a special kind of  (16)  . From cows, we get milk. And we shouldn’t  (17)  that some domestic animals are kept for transport. Many people  (18)  ride horses. Arabs ride on camels which travel in deserts for days without  (19)  . In some places animals are still used to plough field.  (20)  is clear that men just can’t live without these animals.

On an airplane as she was flying across the United States, Dr. Jane Goodall noticed a woman sitting next to her. She asked the woman why she looked so   (1)  and the woman said she was absolutely exhausted because she’d been up at two in the morning trying to   (2)   the water.

    Her young daughter was in an environmental group at school and her daughter’s passion had turned to making sure her   (3)   was eco-friendly. They were staying at the woman’s brother’s house the night   (4)   her rip, and in the middle of the night her daughter woke up to the   (5)   of a dripping faucet(水龙头). The daughter asked for   (6)   turning it off as the faucet handle was   (7)  . The only way to   (8)   the leak(裂缝) was to dig to the pipe in the front grass to find the main valve(阀) to turn the water off, and her daughter wouldn’t go to sleep   (9)   the leak stopped. So at two in the morning   (10)    in the family was out in the yard helping to    (11)   to turn off the water.

    Young people have much more   (12)   to initiate(开始，发起) and accomplish change than what   (13)   may believe. When children make a change in their lives, families are   (14)   along to become environmentally friendly.

    The story also shows that small actions can have a big effect. We   (15)   think about   (16)   events like Clean and Green Week. Instead, a lot of small changes can make a(n)   (17)  . If hundreds or thousands of students   (18)   their families to turn off the faucet to save water, move the air conditioning temperature   (19)  a degree or two in summer, drive less and make other environmentally-friendly changes, the   (20)   family may change its behaviors.