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• 51.下列有關化學鍵及分子極性的敘述，何者不正確？(A)金屬鍵結是金屬離子和周圍環繞的自由電子間之吸引力。(B)極性共價鍵中的電子對，通常靠近電負度較大的原子。(C)單一共價鍵中，共用的電子對來自於同
• 52.跟據資料顯示：某國國民平均每人每年消耗汽油456公升，假設汽油的主要成分為正辛烷( 分子式為C8H18，密度為0.70 g/cm3，燃燒熱為-5430 KJ/mol )，且所使用的汽油完全燃燒成
• 57.化學反應 則下列敘述何者不正確？(A)達平衡時，平衡常數  (B)該反應為一放熱反應，故反應速率隨溫度之降低而增加。(C)降低溫度會使平衡常數增大。(D)若Ea為此反應之活化能，則其逆反應的活化
• 人口老化將會衝擊國家安全。請說明人口老化的成因，以及其所產生的國安危機。（25 分） (102調查局三等)
• 53•下列有關元素性質的敘述，正確的有幾項？(甲）同一原子的游離能和電子親和力的大小相同，僅符號相反。(乙）氟原子的電子親和力絕對值大於其游離能。(丙）第二週期原子的電子親和力中，以氟所釋出的能量最大
• 58.已知氣態甲烷分子中’ C與H間距離約為109pm，其H與H間之距離最接近下列哪個數值？(A) 160 pm(B) 180 pm(C) 200 pm(D) 220 pm
• 2. Live neither in the past nor in the future, but let each day’s work ________ your entire energies
• 3. Ashia couldn’t believe Lucas didn’t want to ______________ after all the meetings they had on thi
• 4. It’s always better to _________ a problem before it arise than to search for a solution afterward
• 5. Though I only caught a _________ of her. I was deeply attracted by her beauty.(A)appetite(B)glimp
• 6. My sister has a high ________ of herself. She won’t take a job like that.(A)illusion(B)grievance(
• 15. The company went broke because there wasn’t enough ________ for its products.(A)interest(B)shelf
• 7. He may be a little careless in his behavior, but his loyalty to his friend is _______ .(A)out of
• 16. Tyler was given a final warning about his behavior at school. Mr. Brown told him that he was wal
• 25. That vacation locale has several ________ resorts; only certain people are allowed to use their
• 8. I received ________ beyond what was due to me.(A)something(B)nothing(C)anything(D)each one
• 17. They went to the country to ________ noise for quietness.(A)expose(B)enter(C)exchange(D)exult
• 26. Every year in Japan, senior high school students face ________ university entrance exams. The ex
• 35. The murderer ruined his chances when he returned to the scene of the crime.(A)got away with the
• 9. They were behind schedule and had to apply for extra ________ to complete their project in time.(
• 18. Howard __________ in a forest __________ in a hotel.(A)prefers camping , staying(B)prefers to ca
• 27. Some radical antiglobalizationists, called “localists,” believe that international trade and act
• 36. Susan is very shy; she doesn’t enjoy being the center of attention.(A)keeping a straight face(B)
• 【題組】45. The underlined word "enigma" in the last line probably means _______.(A)mystery(B)
• The more one is ______ to the English-speaking environment, the better he or she will learn the lang