题目内容：

    Five years ago, I took a career risk by leaving my job to work on a ship. My medical friends did their best to persuade me, saying that running away to sea would____my career. But after these years working as a junior doctor, I was willing to take the risk. ____for adventure, I boarded a ship in Singapore with 2, 000 passengers and crew. To my____，the hospital was well equipped, with an X-ray machine and a blood analyzer. That first voyage was a learning experience, a ____ schedule full of safety drills. There was so much new information to______ . Even remembering which uniform to wear each day was a_____ . Most confusing, I often forgot to ______my clock when the ship crossed time zones.

As a doctor, I was ______for the 600 crew. and I was on call for the entire ship. Far from ____ seasickness and sunburn, I had to deal with other diseases, for my patients were wide and varied. The ship’s medical center was ____ a floating emergency room, and we didn’t have a team of specialists on hand for a second _____ . With long and unpredictable hours, it required mental _____ .

As you can guess, many of the passengers were elderly. Heart attacks don’t ____ geography and emergency evacuations (疏散)were difficult to arrange. I recall one such patient, who was taken off the ship halfway through the Panama Canal .After a _____ ride in an old ambulance, I was relieved that the patient ______long enough to arrive at the hospital in Panama City. ____ , there were several unexpected benefits to the job. I regularly ______the passenger facilities (设施)and I even hosted my own table of passengers in the evenings. On rare days off, I_____ as a tour guide on trips ashore. I got to fly over Alaska in a seaplane and watched a ballet in St Petersburg.

Now, I understand being a ship doctor is not a job-it's a way of _____ .One year at sea became two. I lost my career ambitions, _____I redefined happiness in my life.

1.A.block B.build C.ruin D.improve

2.A.Hungry B.Skilful C.Suitable D.Concern

3.A.shock B.disappointment C.excitement D.relief

4.A.daily B.tight C.strict D.flexible

5.A.take in B.figure out C.search for D.pick over

6.A.training B.risk C.challenge D.choice

7.A.watch B.repair C.check D.set

8.A.powerful B.responsible C.hopeful D.helpful

9.A.treating B.suffering C.escaping D.stopping

10.A.exactly B.particularly C.certainly D.actually

11.A.examination B.consideration C.opinion D.discussion

12.A.comfort B.communication C.toughness D.pressure

13.A.care about B.refer to C.trouble with D.rely on

14.A.relaxing B.boring C.promising D.terrifying

15.A.survived B.struggled C.awoke D.stuck

16.A.Steadily B.Thankfully C.Importantly D.Generally

17.A.cleaned B.fixed C.enjoyed D.protected

18.A.returned B.travelled C.performed D.volunteered

19.A.confidence B.life C.experience D.success

20.A.though B.unless C.but D.or