题目

Bicycle tour and raceA bike tour and race will be held on August 26 and 27 (Sat. ＆ Sun.). At 5:30 am, the riders will leave Tian’ anmen Square and ride the first 35 kilometres as a training leg. Then the next 55-kilometre leg, from Yanjiao to Jixian, will be the first competitive(竞争性的) part of the tour. The riders and their bikes will then be taken from Jixian to Changli.The second racing leg of the tour will be from Changli to the seaside at Nandaihe, covering a distance of 20 kilometres. Saturday night includes the stay at Nandaihe and supper. Sunday morning is free at the seasidMuch new high technology has been introduced from America, ________ a great increase in the production of the company.A.resulting inB.having led toC.contributed toD.caused