48. 化合物 [Pt(NH₃)₄Cl₂]Cl₃ 之配位數為多少？
(A) 2
(B) 4
(C) 6
(D) 9

44. 反應式 NH3 + H+ → NH4+中，何者為共軛酸？(A) NH3(B) H+(C) NH4+ (D) NH3 和 H+

45. 下列敘述何者有誤？ (A)價鍵理論根據原子軌域的重疊，描述金屬和配位子的鍵結為配位共價鍵 (B)分子軌域理論是藉金屬和配位子軌域的組合所形成之各種鍵結分子軌域來描述其鍵結 (C)半徑小，電荷大的金屬離子及有空的d軌域者，易形成配位化合物 (D)和類似而沒有螯合作用的錯合物相較，有螯合作用不會改變錯合物穩定性

46. 化合物 [Pt(NH3)5Cl]Cl3 之配位子為下列何者？ (A) NH3 及 Cl–(B) NH3(C) Cl– (D)沒有配位子

47. 有兩塊相同的鐵片，ㄧ塊鍍上錫，ㄧ塊鍍上鋅，試由以下還原電位預估錫和鋅何者可保護鐵 片抗拒氧化反應？ (A)錫(B)鋅(C)錫和鋅均可(D)錫和鋅均不可

49. Al2O3 的密度為 3.8 g/cm3，Al的原子量為 27，則每 mm3 含有多少個原子？ (A) 1.12 x 1019(B) 2.23 x 1019(C) 1.12 x 1020(D) 2.23 x 1020

50. ㄧ溶液原有 0.01 M 的 Cd+2，加入 KBr 固體至 [ Br– ] = 0.1 M (假設體積不改變)，若 [CdBr4]–2 的 Kd = 2 x 10–4，則達平衡時，Cd+2 的濃度為多少 mol/L？ (A) 3.3 x 10–3(B) 6.7 x 10–3(C) 1.33 x 10–2(D) 6.7 x 10–2

1. No sooner had the supervisor left the warehouse _____. (A) than the workers began to fight (B) than the works had begun to fight (C) the workers then have begun to fight (D) as beginning the workers to fight (E) later began the fight among workers

2. That the legal drinking age ________ lowered is a hot topic for debate in many states of the US. (A) should have (B) should (C) should be (D) which should (E) which should have

3. Because it is the last class for Miss Davidson, the sub teacher well-loved by all of the boys, _____. (A) neither Ian nor his cousins are willing to quit the room (B) both Ian and his cousins are not willing to leave the room (C) not only Ian but also his cousins doesn＇t want to quit the room (D) neither Ian nor his cousins wants to leave the room (E) Ian and his cousins all don＇t want to leave the room

4. At the department store＇s promotion sale last week, _____. (A) Meg almost got 3000 dollars off all her purchases (B) Meg nearly saved 3000 dollars for her purchases (C) approximately 3000 dollars cheaper for Meg＇s purchases (D) about 3000 dollars being cut from Meg＇s purchases (E) Meg saved almost 3000 dollars for all purchases