题目

完形填空I was driving to a business appointmentwhen I came to a very busy crossroad. The stop light had just turned red. Suddenly,an unforgettable 1caught my eye. A young couple, bothblind, were 2 arm-in-arm across this busy crossroad withcars racing by in every direction. Each of them had a walking stick 3 , searching for clues to guide them. Initially I was moved. They were tryingto 4 what I felt was one of the most feareddisability — blindness. It 5 be terrible to be blind. My thought wasquickly interrupted by 6 when I saw that the couple was directlywalking toward the middle of the c13．2014年5月21日，丙国天然气工业公司与中国石油天然气集团有限公司签署协议为期30年的天然气供应协议，你认为两国间的天然气贸易采用什么运输方式最合理（　　）A．管道B．公路C．铁路D．航空