语法与词汇
Before starting on a sea voyage, prudent navigators learn the sea charts, _____ and memorize lighthouse locationsto prepare themselves for any conditions they might encounter.
【正确答案】
B
【答案解析】句意：谨慎的航海员在出海前会研究航向，记录灯塔的位置，以便对各种可能出现的情况做到有备无患。本题考查前后一致，只有“study the sailing directions”与“learn the sea charts”和“memorize lighthouse locations”形式一致。故选B。