【单选题】What will the man probably do?
【判断题】三峡水利枢纽是目前为止世界上最大的水电站。
【单选题】Jack wants _____ the park (公园). [ ]
【单选题】What will the man probably do?
【单选题】国际标准(ISO8554、8555)将现代五金件分为()大类。
【简答题】A.They noticed an apparent change in the position of the North Star. B.They observed eclipses at different times of the year. C.They were the first to estimate the distance between heavenly bodies. D....