242. Stressful environments lead to unhealthy behaviors such as poor eating habits, which _____ increase the risk of heart disease.

　A. in turn B. in return C. by chance D. by turns

241. Circus tigers, although they have been tamed, can _____ attack their trainer.

　A. unexpectedly B. deliberately C. reluctantly D. subsequently

240. The _____ of his clothes indicated too clearly that he had been playing football.

　A. state B. condition C. occasion D. situation

239. When the entire class worked together they finished the project _____.

　A. in no way B. in no time C. on no account D. in no case

238. Paper making began in China and from there it _____ to North Africa and Europe.

　A. sprang B. spilled C. carried D. spread

237. Children who are over-protected by their parents may become _____.

　A. hurt B. spoiled C. damaged D. harmed

236. It would be _____ a risk to let the child go to school by himself.

　A. following B. passing C. running D. carrying

235. So far as he could, John had always tried to _____ the example he saw in Lincoln.

　A. live up to B. set forth C. call for D. cut out

234. I feel sure that _____ qualification, ability and experience, you are abundantly suited to the position we have in mind.

　A. in case of B. in terms of C. in the opinion of D. in the course of

233. He thought this was the first pair of shoes that had fitted him _____.

　A. perfectly B. justly C. fairly D. rightly