Complete the sentences, using the correct form of the words in brackets.

1.   Light pollution makes us                             to see the stars in the sky. (able)

2.   Noise is considered as                                pollution. (environment)

3.   The soil becomes                            because of the use of so many pesticides and fertilizers. (contaminate)

4.                                 waste spills can contaminate groundwater. (industry)

5.                                 habitats have been destroyed in recent years. (nature)

6.   A number of cleaning products contain                               chemicals. (harm)

7.   Water samples collected at these villages were seriously                                      with bacteria. (contaminate)

8.   People believe that the                               water has brought cancer to the local residents. (pollute)

9.   In many developing countries, water pollution is usually a leading cause of             . (die)

10.                               elements have been found in both ground and underground water sources. (pollute)

11. Fish and many other animals are killed by                          in their habitat. (pollute)

12. Astronomers are concerned about light pollution because they have                        in viewing activities in the sky and outer space. (difficult)

I. Choose the word that has the underlined part pronounced differently from the others.

1.   A. paddy                      B. sand                        C. travel                      D. tribal

2.   A. buffalo                     B. photo                       C. limestone                D. botanical

3.   A. jungle                      B. luggage                   C. sunbathe                D. sugar

4.   A. around                     B. various                    C. sound                     D. mountains

5.   A. heritage                   B. giant                        C. garden                    D. village

II. Choose the word which has a different stress pattern from the others.

1.   A. payee                      B. Chinese                   C. coffee                     D. trainee

2.   A. jubilee                     B. guarantee                C. Japanese                D. referee

3.   A. refugee                    B. Taiwanese              C. absentee                 D. committee

4.   A. Viennese                 B. Maltese                   C. Burmese                 D. Chinese

5.   A. reindeer                   B. volunteer                 C. mountaineer           D. engineer

III. Find the words that has different stress pattern in each line.

1. A. dramatic                     B. rhythmic                  C. angelic                    D. romantic

2. A. affect                          B. algae                      C. billboard                 D. cholera

3. A. political                      B. electrical                 C. identical                  D. politic

4. A. aquatic                       B. radiation                 C. pollution                  D. logical

5. A. industry                      B. industrial                 C. poison                    D. poisonous