People in theUSthought Ebola was only a disease, accompanied with fever and found inAfricaat the beginning.  (1)  then a man from west Africa died from Ebola at a hospital in Dallas, Texas. And two nurses   (2)   for him became infected(感染) with the virus, which made the US government publish new guidelines to   (3)   health workers．

Top American  (4)  have repeatedly said that most people have little chance of being infected．Experts have  (5)   that Ebola can only be spread through infected person’s body fluids — like blood．But it   (6)   many Americans are  (7)  what they have heard．

A recent survey found more than 80 percent of Americans believe that Ebola can be spread in many   (8)  , including air forced through the nose or mouth. The Harvard School of Public Health   (9)   the findings. The study also showed that most adults fear there will be a(n)  (10)  of Ebola in the United States soon.

  (11)   survey found that more than 70 percent of Americans would support calls to   (12)   travel to and from Ebola-affected parts ofAfrica.

Thomas Frieden heads the U.S．Centers for Disease Control and Prevention．When asked whether   (13)   officials had considered a travel ban, Mr．Frieden had  (14)    to say：“We won’t be able to check travelers for   (15)  when they leave or when they arrive. We won’t be able, as we do   (16)  , to take a detailed history to see if they were   (17)   when they arrive. When they   (18)   , we wouldn’t be able to impose quarantine（强加隔离）as we now can if they have high-risk touch.”

Last week, President Barack Obama urged Americans not to   (19)   what he called “ panic or fear ”.

This week，the administration announced that all travelers reaching the United States from some African nations are  (20)   to pass through one of five airports.

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.

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.

  阅读下面短文，从短文后各题所给的四个选项(A、B、C和D)中，选出可以填入空白处的最佳选项。

    People have enjoyed the benefits of cycling in Amsterdam for years. It is a ____  (1)  ____ city for cycling because it is fiat and so is convenient for bikes. There are also plenty of places for bicycle parking and most streets in the city centre have a bicycle ____  (2)  ____. Today some people call Amsterdam the "City of Bicycles: because it's convenient for people to ____  (3)  ____ there."

    In the 1960s, a group of cycling ____  (4)  ____ had an idea. They believed that it would be better for everybody if cars weren't ____  (5)  ____ in the city centre and only bicycles were. They were ____  (6)  ____ that this would help to save energy, ____  (7)  ____ pollution and provide free public transport. The group painted hundreds of bicycles white and ____  (8)  ____ them in lots of neighborhoods around Amsterdam for people to use. Anyone was allowed to ____  (9)  ____ them and use them for short journeys. When someone finished a journey they would ____  (10)  ____ the bike there for someone ____  (11)  ____ to use. The problem was that it didn't ____  (12)  ____ — thieves took all the bicycles within weeks!

    However, more than thirty years later, the "white bike" is ____  (13)  ____ in town this time with a computer chip to record its every ____  (14)  ____! To take a bicycle, you have to ____  (15)  ____ a special card inside. The new "white bike" is not actually white but is an unusual design with bright colors. The bikes are parked at special parking place that has enough ____  (16)  ____. There is already ____  (17)  ____ traffic in central Amsterdam, because both ____  (18)  ____ and tourists have used the white bikes. Indeed, ____  (19)  ____ the good ideas of lots of people, like the cycling fans in the 1960, many people around the world have been ____  (20)  ____ city centre streets without cars for many years.