34. A. Pretend to be in better shape. C. Turn more often to friends for help 　　B. Have more physical exercise . D. Pay more attention to bodily sensations.

56 What is the author’s purpose in writing this passage? 　　(A) To remind people of the need of sustainable development 　　(B) To suggest ways of ensuring sustainable food production 　　(C) To adance new criteria for measuring farming progress 　　(D) To urge people to rethink what sustainable agriculture is 　　Passage Two