We should take measures _________ the environment at once. A: to protect B: for protecting C: protecting D: on protecting

Pollution should by any means be stopped ____ the environment. A. from protecting B. protecting C. to protect D. to protecting

Protecting the earth is a worldwide question because ______ A: pollution is everywhere in the world B: polluted air and water in one place affects distant areas C: people all over the world are responsible for the pollution problem D: all of the above

Why can’t people on earth be harmed by radiation A: We are too far away from any harm. B: We can protect ourselves. C: There is part of the atmosphere protecting us. D: There is special layers on our skin.

中国大学MOOC: Cornell president believes that students have taken great initiative in Earth-protecting movement.

5. Ideas need to be transformed from protecting nature from people to protecting nature for people.

______ may be used for ______ our eyes from the sunshine. A: [A] Sunglasses; protect B: Sunglass; protecting C: Sunglasses; protecting

The Green Party _______ protecting the environment.

_____ is covered with heavy snow. A: The earth’s surface B: The surface of earth C: The surface earth D: The earth surface

it’s also about protecting 7)_____________ .