四、完形填空。
Hi, humans (人类). I'm a little fish from an 1 in the south of the earth. Our home was clean and beautiful many years ago. 2 now, it is in a mess. There is much rubbish 3 the surface (表面) of the ocean. The water is 4. It's 5 for us fish to breathe. Some old fish give 6 to us—we can try our best to clean our home or just move away. We try 7 to clean the ocean but it is too difficult. Many families 8 to move to the north. But the 9 is that water in the north may also be bad.
We all 10 our future. And there is little we can do. So I ask you humans 11 help. Can you not 12 away rubbish to the ocean? Will you 13 the litter and take it away after enjoying yourselves by the ocean? Would you please 14 good habits of using water? Maybe these are little things for you, but they may be a big 15 for our ocean. Thanks a lot.
()1. A. ocean B. lake C. river D. land
()2. A. So B. Because C. And D. But
()3. A. protecting B. covering C. staying D. dropping
()4. A. dirty B. useful C. expensive D. good
()5. A. easy B. difficult C. deep D. long
()6. A. habits B. suggestions C. stories D. drops
()7. A. really B. off C. hard D. away
()8. A. decide B. run C. brush D. dig
()9. A. survey B. fact C. shower D. matter
()10. A. come in B. go up C. look for D. worry about
()11. A. by B. for C. at D. in
()12. A. throw B. search C. form D. knock
()13. A. turn B. collect C. wait D. try
()14. A. develop B. buy C. make D. give
()15. A. step B. story C. percent D. planet

1. A 2. D 3. B 4. A 5. B 6. B 7. C 8. A 9. B 10. D 11. B 12. A 13. B 14. A 15. A