世界上第一个把人类送入太空的国家是（  ）

已知：a× =b×1=c÷ ，且a、b、c都不等于0，则a、b、c中最小的数是（  ）

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                                                                                                                                        顾和搏虱如故
        顾和^①始为扬州从事，月旦^②当朝，未入，顷停车州门外。周侯诣丞相，历和车边，和觅虱③，夷然不动。周既过，反还，指顾心曰：“此中何所有？”顾搏虱如故，徐应曰：“此中最是难测地。”周侯既入，语丞相曰：“卿州吏中有一令仆才④。”

                                                                                                                                                                                   （《世说新语•雅量》）
       【注释】①顾和：字君孝。王导任扬州刺史时，调他做从事（从事：古代官职名），后来官至尚书令。②月旦：农历每月初一。③虱：虱子，体外寄生虫。④令仆才：作尚书令和仆射的才能。

   Of all the things we eat and drink，water is the1important.The human body can go2 food for a long time，but two3three days without water could make people4.
   A lot of people don't understand how5water the human body needs6well and many people don't drink enough，esecially in7weather. Most people drink8they are thirsty but in fact they need more water，expecially when they take9.A man's body is 65 to 75 percent of10. If we don't have enough water. We fell tired and may become ill.