新概念第三册自学导读 Lesson42Structure构造 4 - or the chance that they _ an unexpected discovery that(11. 2-3) awould make bcan make cmay make dmight have made 5 It can take as long as eight days getting rope ladders rigged up and _ before (11. 9-10) ato establish bases supplied bsupplying bases established cestablishing supply bases dbases established and supplied 6 After _ the narrow gap, they climbed down the steep sides of the cave. (11. 18-19) athey were entering bentering centered dthey will enter 7 - let _ the current to the other side . (11. 22-23) athem be carried with btheir being carried by cthemselves carry dthemselves be carried by 8 No other sound could be heard _ made by water(11. 30-31) aexcept it was bthan that cthat was dbut this was Vocabulary词汇 9 It can take _ eight days to rig up (1. 9) aaround bmore than cup to dat least 10 - has tunnelled a course through a _ in the rocks. (11. 13-14) afault bgap ccleft dfissure 11 They had to _ along this (11. 19-20) asidle nervously bfile sideways cwalk sharply dmove cauriously 12 To protect themselves from the _ water, they wore special rubber suits. (1. 23) afrozen bfreezing cchilly diced