答案與題解：

　　1. 文章標題分析：One Good Reason to Let Smallpox Live

　　It’s now a fair (= reasonable/合理的)bet that we will never see the total extinction of the smallpox virus.(點題：與標題所反映的內容一致)The idea was to cap the glorious achievement of 1 980，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.‘Undoubtedly several nations still have__4__ vials. __5__ the last“official”stocks of live virus bred mistrust of the US and Russia，__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(回應文章主題。)

　　2. 直接解題：

　　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 1 980，when smallpox was eradicated (= eliminate/remove/消除，根除)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?

　　When 引導定語從句，對前面的時間詞1 980進行說明。

　　If smallpox had truly gone from the planet，what point was there in keeping these reserves?

　　Point in doing …/做…的意義

　　e.g. what is the point of arguing with them?

　　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

　　__1__reality，of course，it was naive (adj.天真的)to __2 __ that everyone would let __3__ of such a potent potential weapon.

　　1. A.分析：被選項是介詞，注意搭配結構。in reality“實際上，事實上”是固定搭配使用的說法。

　　2. B. 分析：借助被選項的特點： know = be aware，排除A和D，再借助搭配結構(..是天真的)判斷B(想象)是答案。

　　3. C. 分析：1et跟原形動詞，go符合這一原則。

　　4. A) much B) more C) most D) a few

　　‘Undoubtedly several nations still have__4__ vials(小瓶).

　　4. D.分析：根據搭配結構--..小瓶，判斷D最合適(而且該句和前句中都沒有出現比較的含義)

　　5. A)And B) While C) Whereas D) Although

　　6. A)since B) for C) because D) of

　　__5__ the last“official”stocks of live virus bred mistrust of the US and Russia，__6__ no obvious gain.

　　5. A.分析：該句結構是“句子 短語結構”，因此空格5處的連詞必須能引導一個獨立的句子，這樣判斷只有A合適(其他選項都只能引導從句結構)

　　6. B.分析：借助被選項的特點B和C相關，用法不同，重點注意，再借助空格后是名詞性結構這個特點判斷B合適。