单项选择题
A. care B. try C. strive D. wish
A. economic growth has reduced the biodiversity worldwide B. economic growth has changed the ecosystem rapidly C. people should be proud of their position in nature D. people and nature should coexist in harmony
A. it appeals to the reader to study bioscience B. it sets reader probing into human cognition C. it interests the reader in spiritual activities D. it presents the advancement of natural science