1.While some Chemicals may be harmless others can cause________. (1 Điểm) A. damage B. damaged C. damaging 2.The dumping of________ sewage into the sea is a source of ocean pollution. (1 Điểm) A. treated B. treatment C. untreated 3. Children should be aware ................ the environmental issues we are facing. (1 Điểm) A. at B. in C. of 4.Water pollution can lead to the________ of aquatic plants and animals (1 Điểm) A. die B. dead C. death 5. The overuse of pesticides causes damage ............... the environment. (1 Điểm) A. in B. to C. at 6. In remote regions, the air is pure and the crops are free of ________ insecticides (1 Điểm) A. poison B. poisonous C. poisoning 7.. It’s evidence that this ocean is clean and environmentally ........................ (1 Điểm) A. polluted B. pollute C. unpolluted 8. Some scientists warn that light________ damages people and animals. (1 Điểm) A. pollute B. pollution C. pollutant 9. A________ is a substance that makes something dirty, polluted, or poisonous. (1 Điểm) A. contaminant B. contaminate C. contamination 10. Diseases are primarily due to________ food and air. ()Trình đọc Chân thực (1 Điểm) A. contaminate B. contaminated C. contamination