One Good Reason to Let Smallpox Live
　　It’s now a fair bet that we will never see the total extinction of the smallpox virus. 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 that 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 to____2____that everyone would let____3____of such a potent potential weapon.1 Undoubtedly several nations still have____4____vials.
　　___5_____the last “official” stocks of live virus bred mistrust 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 in a well-guarded UN laboratory that’s open to all countries. The US will object, of course, just as 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
　　词汇：
　　smallpox /'sm??lp?ks/ n.天花
　　cap /kaep/vt.结束;覆盖
　　killer /'k?l?/ n.杀死物;杀人者
　　potent /'p??t(?)nt/ adj.有效力的;强有力的
　　vial /'va??l/ n.小瓶
　　mistrust /m?s'tr?st/ n.不信任，怀疑
　　auspices /'??sp?s?z/ n.赞助;支持
　　注释：
　　1. In reality, of course, it was naive to imagine that everyone would let go of such a potent potential weapon.当然,想象每个人都会放弃这样一种有效的潜在的武器事实上是幼稚的。
　　2. And the last “official”stocks of live virus bred mistrust of the US and Russia...:美俄最后的“官方”活病毒储备引起大家对这两个国家的不信任。
　　练习：
　　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