When people talk about air pollution, they are usually thinking about outdoor air   1    . But do you know that there is also air pollution inside homes, offices, hotels and other buildings? The air in your home can be 2 to 100 times more polluted than the air outdoors! In fact, some American doctors say that 50% of illnesses have    2    to do with polluted indoor air.

   A lot of pollution comes from indoor activities    3    smoking and cooking. As most people    4    about 80-90% of their time inside buildings, it is important to take indoor air pollution seriously, too.

   Air pollution influences our health    5   . When the air is polluted, not only young children and old people suffer from (遭受) it,    6    people with health problems suffer as well. Indoor air pollution can    7    people's eyes, noses and throats. Air pollution, both indoor and outdoor, can also lead to lung cancer(肺癌)and heart disease! In the great London fog in 1952, 4,000 people died in a few days    8   the pollution! It is said that half a million young children and women die each year in India because of indoor air pollution!

1. A. pollution                     B. pollute                     C. polluting

2. A. nothing                          B. everything                   C. something

3. A. as well as                      B. such as                     C. instead of

4. A. take                           B. cost                         C. spend

5. A. in many ways                   B. in many things             C. in many houses

6. A. and                       B. but                         C. or

7. A. hit                        B. hurt                         C. polluted

8. A. because of                   B. thanks to                    C. related to

Sports in America

   In many parts of the world, there are four seasons: spring, summer, fall and winter. In the USA, there are only three: football, basketball and baseball. If you want to know    1   , just have a look at what people are playing.

   Sports are an important part of American culture. Throughout their school    2   , Americans learn to play many sports. All students take P.E. classes in school. Some try out for the school teams,    3   others join school sports leagues.

   For many people in the USA, sports are not just    4  . They're almost a religion (宗教).    5    sports fans buy expensive tickets to watch their favorite teams and athletes    6    in person. Other fans watch games at home, glued to their TV sets. The most devoted (投入的) sports fans    7    a game.

1. A. what is season                 B. what season is               C. what season it is

2. A. live                     B. life                        C. lessons

3. A. while                       B. until                       C. when

4. A. for funny                       B. for fun                     C. for interesting

5. A. Thousands of                   B. Thousand of                 C. Thousand

6. A. to play                               B. played                      C. play

7. A. never lose                         B. have never lost               C. never miss

   Earthquakes may happen anywhere on the earth. When some plates of the earth move suddenly, an earthquake happens. Many earthquakes begin under the sea. They often happen near the mountains, too.
    During an earthquake, the shakings make rocks rise suddenly and even crack (
断裂) open. Houses fall, people are killed or hurt, and sometimes the whole villages or cities are destroyed.
   Can we do something to keep ourselves safe from earthquakes? Scientists have studied earthquakes and make maps that show the “earthquake belts”. In areas in these belts, it’s possible for earthquakes to happen. In these areas we should build strong houses to fight against earthquakes.
   In the future, scientists will be able to tell when and where an earthquake will be before they happen. They can also tell people what to do and how to do it.

1. The reason for an earthquake is           .

   A. that there are so many plates on the earth

   B. that the sea is too deep

   C. rocks’ cracking open  

2. A lot of earthquakes often happens           .

    A. in the area                B. next to mountains            C. at night         

3. A map showing the earthquake belts will tell people           .

   A. what kind of houses to build

   B. what kind of houses can stay up in an earthquake
   C. where earthquake may happen

4. Which is Not True according to the passage?  

   A. During an earthquake people are killed or hurt.

   B. The scientists can tell when and where an earthquake is now.

   C. we should build strong houses to fight against earthquakes. 

5. In the future, we’ll be no longer so afraid of earthquakes           .

   A. with the help of scientists’ exact prediction

   B. because of a map showing the “earthquake belts”

   C. because we can guess the date and place of earthquakes

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