61._________A.water B.air C.energy D.safety

1，－5，13，－29，______ A.－61 B.－39 C.39 D.61

The word trickle in Paragraph 4 is closest in meaning to______.A．water dropB．stre

61._________A. drawsB. speaksC. sendsD. hearsay

61._________A. processesB. producesC. possessesD.

61._________A. enjoyedB. experiencedC. performedD

61._________A.. modificationB. detectionC. assess