26. We have to apply effective measures to save many plant and animal species _____extinction
A. of B. off C. from D. against
27. The giant panda is ______ because of a lack of wood which is the result of the destruction of many bamboo forests.
A. endangeredB. dangerousC. extinctD. eliminated
28. Many plants and endangered species are now endangered of _______.
A. expressionB. expulsionC. extinctionD. extension
29. Land, air, water, plants and animals all comprise the _________ environment.
A. natureB. naturalC. naturallyD. naturalize
30. I feel that I have benefited greatly _______ her wisdom.
A. about B. byC. fromD. with