I. Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the numbered blanks. (1.0 point) Nowadays, people are destroying rain forests of the earth seriously. It is (31) ______ that every year 100,000 square kilometers of rain forests are destroyed (32) ______ supply of wood paper and fuel as well as for the residence and (33) _____ land. Rain forests are very important for the worlds climate. They receive the rainfall on the earth and produce a large amount of the worlds oxygen. Destroying rain forests, (34) ______, is destroying our environment. Saving rain forests is an international problem. Nations need cooperation to (35) ______ rain forests, if not, it will be late. 31. A. interesting B. pleasure C. exhausted D. estimated 32. A. for B. to C. with D. in 33. A. corn B. farming C. field D. rice 34. A. so B. however C. moreover D. therefore 35. A. take B. help C. save D. cut