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2017英语等级考试pets5级阅读理解每日练习七

来源 :华课网校 2017-03-30

2017英语等级考试pets5级阅读理解每日练习七

  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.

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