One summer afternoon， when I was about eight years old

One summer afternoon， when I was about eight years old， I was looking at a beautiful rainbow （彩虹）. Somebody said， “If you go to the 16 of the rainbow， you would find a lot of gold there under the ground.” So I 17 from the house， and set off toward the woods.
　　I was so 18 that I knew just where that rainbow ended. I remembered how 19 I was in my thoughts and what fine presents I promised to give all my friends. So thinking， almost before I knew it， I had 20 the thick forest， and the end of the rainbow was not there！But I saw it shining down among the trees a little farther off. So I moved on and on， through the bushes and across rapid streams（溪流）. The woods grew 21 and darker， and the ground became wetter and wetter. Suddenly I met in my way a 22 porcupine（豪猪）， who made himself still larger when he saw me. I was very afraid of it and I ran from it as fast as my 23 feet would carry me. In my 24 I forgot to keep my eyes on the rainbow. And at last， I 25 and looked for it. It was nowhere in sight！I cried into tears， for I had lost all my 26 .
　　But I soon found that my 27 had just begun： I was lost！I could not tell which was east or west. Crying and calling， though I knew that no one could 28 me. All at once I heard someone calling out my name， so I 29 up. It was my eldest brother. He gave me a hug and kissed away all my tears， and then he 30 me what the rainbow really is， “It is only painted air， and does not rest on the earth.”
　　（ ）16. A. end B. rightC. topD. front
　　（ ）17. A. cameB. escaped C. jumped D. rushed
　　（ ）18. A. active B. sure C. interestedD. patient
　　（ ）19. A. anxious B. glad C. sadD. sorry
　　（ ）20. A. noticed B. clearedC. passed D. reached
　　（ ）21. A. thinnerB. closer C. thicker D. smaller
　　（ ）22. A. young B. lovelyC. large D. fresh
　　（ ）23. A. injured B. tiredC. bigD. cold
　　（ ）24. A. hurryB. hands C. experience D. opinion
　　（ ）25. A. cheeredB. rememberedC. returned D. decided
　　（ ）26. A. ways B. timeC. gold D. memory
　　（ ）27. A. success B. promiseC. situation D. trouble
　　（ ）28. A. thankB. understand C. follow D. hear
　　（ ）29. A. jumped B. climbed C. wokeD. got
　（ ）30. A. asked B. showed C. toldD. brought