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. endangered​B. dangerous​​​C. extinct​​D. eliminated 28. Many plants and endangered species are now endangered of _______. A. expression​​B. expulsion​​​C. extinction​​D. extension 29. Land, air, water, plants and animals all comprise the _________ environment. A. nature​​B. natural​​​C. naturally​​D. naturalize 30. I feel that I have benefited greatly _______ her wisdom. A. about​​ B. by​​​​C. from​​D. with