题目内容：

Do you feel upset when you hear that your school might not allow cell phones? Do you break into a cold sweat when your cell phone battery(电池) dies? If you       live without your cell phone, you might have a       .

A recent study found that some people could be       to their cell phones. The study was conducted at Staffordshire University in England. About 40 percent of students       said they couldn’t do without their cell phones. About 90% said they took their       with them everywhere. One third of students surveyed said they used cell phones to       themselves up.

The study also asked students 18 to 25 questions designed to       addictive behavior. The results found that one in six cell phone users have a lot in       with gambling addicts (赌瘾). Some people said they sometimes lied about their cell phone use.       admitted stealing to pay for their cell phone habit.

Dr David Sheffield,       conducted the study, said he wasn’t surprised by the       . “Students use their phones       , and this has both positive       such as staying in touch with friends and family, and negative ones too, such as       costs and social costs,” he told Weekly Reader. “The most       finding was that a number of people reported they had       a relationship or job because they spent too much time on mobile phones .”

    part of the study, some students agreed to take a       from their cell phones. After three phone-free days, students reported feeling less       about their daily lives. That might be a       reason to hang up the phone!

1.A. mustB. mustn’tC. canD. can’t

2.A. problemB. diseaseC. questionD. trouble

3.A. pleasedB. crazyC. devotedD. interested

4.A. surveyedB. examinedC. checkedD. tested

5.A. booksB. phonesC. notesD. pens

6.A. showB. cheerC. pickD. take

7.A. changeB. formC. developD. check

8.A. correctionB. relationC. touchD. common

9.A. OtherB. OthersC. The othersD. The other

10.A. whoB. whichC. thatD. what

11.A. discoveriesB. explorationsC. resultsD. experiments

12.A. carefullyB. brieflyC. hardlyD. frequently

13.A. effectsB. pointsC. decisionsD. ideas

14.A. financialB. physicalC. nationalD. natural

15.A. interestingB. surprisingC. excitingD. pleasing

16.A. foundedB. earnedC. builtD. lost

17.A. ForB. ByC. AsD. Of

18.A. breakB. chanceC. riskD. fortune

19.A. encouragedB. stressedC. satisfiedD. inspired

20.A. funnyB. strangeC. goodD. wrong