Câu 1. A nuclear reactor releases ______ which is dangerous to the environment.
A. radiation
B. heat
C. energy
D. carbon dioxide
Câu 2. The____________ friendly products are designed not to harm the natural environment.
A. environment
B. environmental
C. environmentally
D. environmentalism
Câu 3. People are destroying the air by adding ______ to it.
A. pollutants
B. polluters
C. pollution
D. polluted
Câu 4. The waste from the chemical factory is extremely ______.
A. harm
B. harmful
C. unharmed
D. harmless
Câu 5. The ______ friendly products are designed not to harm the natural environment.
A. environment
B. environmental
C. environmentally
D. environmentalism