为了让广大考生更有效的备战2011年职称英语考试，精品学习网特整理了以下“卫生类完型填空提高习题”资料，供考生复习。
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One Good Reason to Let Smallpoxn([医]天花) Live
It‘s now affair bet that we will never see the total extinction(消失， 消灭) of the smallpox virusn.([微]病毒)。 The idea was to cap the glorious achievement of 1980， when smallpox was eradicated in the wild， by destroying the killer virus in the last two labs the are supposed to have it—one in the US and one in Russia. If smallpox had truly gone from the planet， what point was there in keeping these reserves?
____1____ reality， of course， it was naive(天真的) to ___2___ that everyone would let _____3_____ of such a potent有力的， (有效的 potential潜在的)weapon.1 Undoubtedly(无庸置疑地， 的确地) several nations still have _____4_____ vials. _____5_____ the last “official” stocks of live virus bred(繁殖， 教养， 抚养) mistrust 不信任， 猜疑of the US and Russia，2 ______6_____ no obvious gain.
Now American researchers have ____7_____ an animal model of the human disease， opening the ____8____ for tests on new treatments and vaccines. So once again there‘s a good reason to _____9_____ the virus—just in ____10____ the disease puts in a reappearance.
How do we _____11_____ with the mistrust of the US and Russia? ____12____. Keep the virus _____13_____ international auspices(由……主办及赞助) in a well-guarded UN laboratory that‘s open to all countries. The US will object， of course， just at it rejects a multilateral approach to just about everything. But it doesn’t ____14____ the idea is wrong. If the virus _____15______ useful， then let‘s make it the servant of all humanity—not just a part of it.
1. A) In B) On C) At D) For
2. A) know B) imagine C) realize D) be aware
3. A) to go B) going C) go D) went
4. A) much B) more C) most D) a few
5. A) And B) While C) Whereas D) Although
6. A) since B) for C) because D) of
7. A) looked for B) sought C) found D) talked about
8. A) method B) road C) street D) way
9. A) keep B) put C) destroy D) eradicate
10. A) need B) case C)necessity D) time
11. A) handle B) tackle C) deal D) treat
12. A) Difficult B) Hard C) Safe D) Simple
13. A) under B) in C) on D) for
14. A) say B) mean C) state D) declare
15. A) will be B) would be C) is D) are