II. Choose the best answer A, B, C or D to complete the sentence. 1. After the accident, many people were exposed________ radiation. A. from B. at C. to D. with 2. Light pollution has a wide range of negative effects________ I’m human health. A. on B. of C. for D. to 3. _______can cause high blood pressure, heart problems, sleep disturbances, and hearing problems. A. Air pollution B. Light pollution C. Water pollution D. Noise pollution 4. The levels of carbon dioxide in the atmosphere have risen________ the burning of fossil fuels. A. therefore B. because C. in spite of D. due to 5. If rubbish is non-biodegradable, it________ forever. A. exists B. will exist C. won’t exist D. doesn’t exist