|
强化训练17 语法填空(三) (45分钟，100分) A A triathlon (三项全能运动) is a sports event which combines three sports, __1__ (typical) running, biking, and swimming. During a triathlon, athletes finish all three sports without stopping __2__ (beat) the clock. People of all ages and sizes can compete in triathlons. But much like other sports events, a lot of professional __3__ (compete) rule the triathlon world. In addition, many triathlons __4__ (hold) to benefit charity, much like marathons. The modern triathlon appeared in California in __5__ 1970s. It usually begins with the swimming, __6__ (follow) by cycling, and finally running. A triathlon tests the endurance (忍耐力) and speed of an athlete, as well as his or her ability to keep energy and focus __7__ the race as a whole. A triathlon competes against a clock, rather than against other athletes. A variation of the triathlon is a relay triathlon, __8__ a different athlete completes each stage. The swimming stage takes place in a lake or the open ocean. As soon as athletes come out from the water, they change into cycling at the __9__ (fast) speed to save time. After cycling, the athletes change shoes to run. The course is considered complete once the athletes __10__ (cross) the finish line. 1．______ 2.______ 3.______ 4.______ 5．______ 6.______ 7.______ 8.______ | 
