单选题
Heart Attack
In the United States, and especially in big cities and rural areas, tens of thousands of people with hearts that should be good 【51】 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 【52】 after the heart suddenly stops pumping. In contrast, in Seattle, the survival 【53】 after such heart attacks is one in five.
"The difference can be traced 【54】 the effectiveness of the chain of survival", Dr. Joseph P. Ornato said. " Each link in the 【55】 must be strong enough for many lives to be 【56】 ".
The chain begins with an immediate telephone 【57】 for emergency help and the start within four minutes of the process needed for restarting the 【58】 working, by a family member or bystander (旁观者).
It continues with the prompt arrival-------within eight 【59】 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 (给予, 实施) of advanced (先进) emergency care by nurses to maintain the heart''s ability to survive until the doctors at the hospitals can take 【60】 When one or more links in this chain fail or function too slowly, the 【61】 of a victim surviving heart attack falls rapidly. Because of widespread weaknesses in the chain of 【62】 , experts in emergency heart care estimate that 20,000 to 80,000 people 【63】 needlessly of heart attack each year, a number comparable to the 55,000 killed annually in automobile 【64】 .
One expert says, "Sending an emergency vehicle to a heart attack victim, 【65】 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."
【正确答案】
B
【答案解析】从语法上分析,此空白处应该填一个副词,因此首先就排除了选项C)。选项A)、B)既可当形容词也可当副词,too只能当副词,但从上下文意思看,只有选项B)合适,因为be+adj.+enough to do sth.是个固定结构,后面的enough to do sth.是前面形容词的程度状语。
【正确答案】
C
【答案解析】注意此空白处的句子,空白处应该是that引导的宾语从句的谓语,因此只有填survives才能与它的主语only one person in 100相呼应,填其他选项都不符合上下文意思。此外,下句的survival也在某种程度上起提示作用。
【正确答案】
D
【答案解析】无论是空白处前句的one person in 100或是空白处后面的one in five都提示此处应填(survival)rate。这里的rate是“比率”,而不是“速度”,因此不能填“speed”。
【正确答案】
A
【答案解析】be traced to…“追踪至…,追溯至…”是固定词组。
【正确答案】
D
【答案解析】前句的chain of survival已为此空白起提示作用。Each link in the chain:这个链上的每一个环节。