小题1:C
小题1:D
小题1:B
小题1:C
小题1:根据第二段When men were wondering whether it was possible to reach India by sailing westwards from Europe, and whether there was any land on the other side of the Atlantic Ocean, 描述，可知他想用行动来发现新大陆。故选C
小题1:根据最后一段and the more we learn, the better we realize our ignorance.描述，可知选D。
小题1:根据第一段The wonderful world which lies before us today has been put up by hardworking men with clear heads and inventive mind,…… It is sometimes necessary to question and even to disbelieve some of the statements made by experts.描述，可知选B
小题1:根据第二段and whether there was any land on the other side of the Atlantic Ocean,……He was successful in finding land, but it was not India.描述，可知选C