Section 1. Choose the best answer A, B, C or D to indicate the correct answer to each of the sentences. (2.3pts)

5. ...................is the contamination of bodies of water such as lakes, rivers, oceans and groundwater.

A. Air pollution B. Thermal pollution C. Water pollution D. Soil pollution

6. This morning, befor Hoa went to the zoo, she...........her homework

A. had finished B. finished D. finishes

7. If tourists............rubbish in the river the water would be cleaner now. 

A. don't throw B.threw C. throw D. didn't throw

8. The victims on the roofs of the houses..........with food and water by the rescue team.

A. provided B. will be provide c. were provided D. had provided

Section 2. Choose the best answer A, B, C or D that has different stress partern from other words(0,5pt).

3. A. national B. grammatical C. medical D. chemical

4. A. climatology B. bibiography C. communacation D. radiography