全国英语等级考试pets5基础练习题
Among the blind the one-eyed man is king.下面，小编为大家搜索整理了全国英语等级考试pets5基础练习题，希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网!
1. Shortages of flue vaccine show that _______。
[ A ] America relies too much on foreign suppliers
[ B ] the demand of flu vaccines is high this year
[ C ] quality problem is a serious problem in flu vaccine production
[ D ] the supply of flu vaccines is rather weak and America has no back-up measures to make it up
2. The word "cleared" ( Line 4, Paragraph 3 ) might mean _______。
[ A ] permitted
[ B ] removed
[ C ] proved
[ D ] produced
3. Private companies have little interest in producing flu vaccines because of _______。
[ A ] complicated process, high cost, low profit and high risk
[ B ] shortages of fertilized chicken eggs
[ C ] difficulty in growing live virus
[ D ] fast changing of flu virus
4. From the last paragraph we can infer that _______。
[ A ] the government hopes to solve the problem by way of volunteer restrictions
[ B ] more than 47 million Americans who are qualified to get flu vaccine shots can not get them this year
[ C ] America has to deal with a limited supply of flu vaccines this year
[ D ] normally only a small percentage of American population gets flu vaccine shots each year
5. According to the passage, which of the following is TRUE?
[ A ] All Americans are persuaded not to get vaccinated this year.
[ B ] The big problem in innovating flu vaccine producing technique is how to grow virus in a new way.
[ C] More flu vaccines can not be produced in a short time because private companies refuse to produce more.
[ D ] Flu vaccines are easier than most vaccines to produce through cell cultures.
本篇文章探讨了美国流感疫苗短缺事件，经济成因以及当前与未来的解决办法。第一段，作者介绍了美国流感疫苗短缺问题以及其直接原因，由于质量控制等问题，英国当局禁止向美国运输疫苗，从而导致疫苗严重短缺，使疫苗供应量减少了近一半。于是联邦卫生部门的官员敦促2至4岁的健康公民不要注射疫苗;第二段中，作者剖析了其背后的经济原因;在第三段里，作者介绍了解决短缺问题的办法之一：革新疫苗生产技.术，将其从受精卵中转移到细胞培养。第四段中，作者探讨了美国的当务之急：如何利用好有限的疫苗。出路就是号召公民发扬风格，将注射疫苗的机会让给敏感群体，让那些真正需要的人能够接种疫苗。
答案及解析
1.D【解析】第一段最后一句话指出了疫苗短缺所暴露出来的问题。“This reemphasizes the fragility of our vaccine supply，”says Dr.Martin Myers of the National Network for Immunization Information，“and the lack of redundancy in our system.…‘这再次凸显出我们疫苗供应的脆弱性，”全国免疫信息网的马丁·迈尔斯医生说，“此外，我们也没有必要的补救机制。”因此正确答案为D。
2.A【解析】在第三段最后一句“…one culture—based product has been
cleared for marketing in Europe.”里出现了“cleared”一词。根据下文中“marketin9”和读者有关药品上市前应该得到批准的常识，可以判断出，该词在本句中的意思是“得到官方的批准”。因此正确答案为A。
3.A【解析】第二段第二句“Mainly because private companies have had little incentive to pursue it.”意思是说“私企生产流感疫苗的积极性不高”。接下来作者介绍了制作疫苗的复杂工序，由此可以推断出流感疫苗生产工艺复杂、成本高。第二段又明确指出了私企不愿意生产流感疫苗的其他原因：利润率低、需求不稳定，此外由于流感病毒每年都不同，因此生产数量不能过大，由此也可推断出生产的风险性大，如果生产多了就会损失很大。因此正确答案为A。
4.【解析】由第四段第二句“The government estimates that 95 million people still qualify for shots under the voluntary restrictions announced last week.”中可以知道大约有九千五百万人有资格注射疫苗。根据第四段第三句：“That’s nearly twice the number of doses that clinics will have on hand，but only 0 million Americans seek out shots in a normal year.”和前一句可以推断出美国现有大约四千七百万份流感疫苗库存，由此可推断出美国至少还有四千七百多万有资格注射疫苗的人无法得到注射。因此正确答案为B。
5.B【解析】由第一段的“Instead of beseeching us all to get vaccinated.they’re now urging most healthy people between the ages of 2 and4 not to.”可以判断出美国之呼吁2至4岁的.健康人不接种流感疫苗，而不是所有的美国人，因此答案A是错误的。从第二段最后一句话可以看出疫苗生产厂家无法临时增加疫苗生产不是由于他们不愿意，而是由于受精鸡蛋的生产已经预先计划好，无法提供更多的受精鸡蛋，由此可见答案C是错误的。从第三段第三行“Flu vaccines are harder than most to produce this way”可以判断出答案D是错误的，因为流感疫苗比别的疫苗更难用细菌培育的方式生产。而由第三段第2—3行“The main challenge is to shift production from eggs into cell cultures--a medium already used to make most other vaccines.”以及上一句可见，改造疫苗生产工艺的关键在于革新病毒培育技术。因此正确答案为B。
【全国英语等级考试pets5基础练习题】相关文章：
全国英语等级考试(PETS5)词汇09-19
2017年11月全国英语等级考试pets5练习题及答案05-20
全国英语等级考试pets5词汇试题及答案07-19
英语等级考试pets5英语运用练习题11-11
全国英语等级考试四级综合基础练习题07-11
全国英语等级考试pets5提分试题附解析06-15
全国英语等级考试阅读集训巩固练习题06-07
英语等级考试pets5复习指导试题05-12