职称英语理工类完形填空专项练习及答案(4)

　　Heart Attack

　　Throughout the United States, and especially in big cities and rural areas, tens of thousands of people with hearts that should be good 　　　　　 to keep them alive die each year for lack of adequate first aid. In New York City, for example, a new study has shown that only one person in 100 outside of hospitals 　　　　　 after the heart suddenly stops pumping . In contrast, in Seattle, the survival 　　　　　 after such heart attacks is one in five.

　　The difference can be traced 　　　　　 the effectiveness of the chain of survival, Dr. Joseph P. Ornato said. Each link in the　　　　　 must be strong enough for many lives to be 　　　　　.

　　The chain begins with an immediate telephone　　　　　 for emergency help and the start within four minutes of the process needed for restarting the　　　　　 working, by a family member or bystander . It continues with the prompt arrival-within eight 　　　　　 ten minutes of a rescuer equipped with a special instrument that can shock the heart back to a normal rhythm. And it ends with the administration of advanced emergency care by nurses to maintain the hearts ability to survive until the doctors at the hospitals can take . When one or more links in this chain fail or function too slowly, the 　　　　　 of a victim surviving heart attack falls rapidly. Because of widespread weaknesses in the chain of 　　　　　, experts in emergency heart care estimate that 20,000 to 80,000 people 　　　　　 needlessly of heart attack each year, a number comparable to the 55,000 killed annually in automobile 　　　　　.

　　One expert says, Sending an emergency vehicle to a heart attack victim 　　　　　 the special equipment is like having policemen with guns but no bullets. They may put on a good show, but they lack the weapon needed to get the job done.

　　1 A enough B much C many D too

　　2 A dies B survives C stops D wakes

　　3 A speed B thing C rate D people

　　4 A on B at C from D to

　　5 A list B process C chain D step

　　6 A accepted B taken C born D saved

　　7 A call B number C line D worker

　　8 A person B heart C brain D body

　　9 A to B by C and D toward

　　10 A out B about C on D over

　　11 A cause B start C chance D event

　　12 A death B luck C help D survival

　　13 A die B live C survive D come

　　14 A production B accidents C incidents D troubles

　　15 A by B at C with D without

　　【参考答案】

　　1. A　　2. B　　3. C　　4. D　　5. C

　　6. D　　7. A　　8. B　　9. A　　10. D

　　11. C　 12. D　 13. A　 14. B　 15. D