题目内容：

In 2016, 60-year-old Marshall Reeves got onto his bike in California. He________the Race Across America, a 3000-mile_________that runs from coast to coast.

The________was to cross the finish line in Maryland in two weeks. It had________him twice. But he didn’t give up. For his third________, Reeves had a new source of_________: He was racing with 3000 Miles to a Cure, which raises money for brain cancer research.

The race is one of the most ________in the world. Only about half the competitors are able to finish it.________other long-distance bike races, it is continuous—once the clock starts in California, it doesn’t stop until Maryland. Therefore, racers have to meet the________time cutoffs (截止点), otherwise it is impossible for them to________it.

Racers are typically________by a small crew in cars, whose job is to keep the racers not only physically fit, but also mentally ________.In the early days of the race, when Reeves had time to stop at a hotel, he would be_________to a full-body massage(按摩) and a good night’s sleep. But after three days, rest was a luxury(奢侈品) as he needed to_______for over 20 hours a day to achieve his goal.

After crossing the two points where his previous attempts had________, Reeves entered an unknown area. With just 25 miles left, Reeves_________to stay awake, just catching quick naps. _________, he successfully crossed the finish line in 12 days, 13 hours and 52 minutes.

This year, Reeves will________across America again. But this time it’s a little_________—as a road director, he returned the________for his crew’s hard work.

1.A. began    B. delayed    C. canceled    D. sponsored

2.A. journey    B. way    C. voyage    D. street

3.A. point    B. goal    C. rule    D. order

4.A. interrupted    B. prevented    C. defeated    D. blocked

5.A. exam    B. attempt    C. idea    D. desire

6.A. method    B. strength    C. experiment    D. motivation

7.A. exciting    B. rewarding    C. disappointing    D. challenging

8.A. Except for    B. As to    C. Unlike    D. Beyond

9.A. flexible    B. spare    C. strict    D. suitable

10.A. make    B. get    C. put    D. enjoy

11.A. directed    B. followed    C. controlled    D. encouraged

12.A. determined    B. patient    C. cautious    D. worried

13.A. returned    B. shown    C. delivered    D. treated

14.A. walk    B. run    C. bike    D. drive

15.A. disturbed    B. completed    C. paused    D. ended

16.A. offered    B. struggled    C. preferred    D. expected

17.A. Obviously    B. Hopefully    C. Generally    D. Eventually

18.A. set out    B. give up    C. come on    D. call off

19.A. comfortable    B. normal    C. different    D. tough

20.A. respect    B. favor    C. honor    D. praise