1.approbation n.贊成，同意(sanction)

詞根記憶：ap(表加強)+prob( =prove證實)+ation --證實是好的--贊成

例:qualified approbation有條件的贊成

2.appropriate a.適當的，相稱的(fitting, suitable)

詞根記憶：ap+propri（適當的）+ate --適當的

例:The tropical wildlands that are still relatively intact do not provide appropriate habitats for reproduction.

3.appropriation n.撥款(money set aside by formal action for a specific use)

例:appropriations for the military services軍備撥款

4.approval n.批準：認可；贊成( an act or instance of approving)

詞根記憶：來自approve(v.批準：認可；贊成)

例:Such approvalis denied if the commander judges that the evidence on which the provisional arrest is based is insufficient.

同根詞：disapprove(v.不贊成)

5.approve v.贊成（to accept as satisfactory）；批準，認可（to ratify）

詞根記憶：ap(一再)+ prove(證實)--再證實是好的--贊成

例:The board has approved an annual salary of over one million dollars for our company's chief executive officer.

派生詞:disapprove(v.不同意)；approval(n.贊成；批準)

6.approximate v.接近(to bring near);a.近似的，大概的(nearly correct or exact)

詞根記憶：ap+proxim(接近)+ate--接近的--近似的

例:In 1982 the approximate average cost of operating a subcompact car for 10,000 miles was $3,400.

派生詞:approximation(n.近似值)：approximately(ad.近似地，大約)

7.aquarium n.水族館；養魚池(artificial pond where live fish and other water creatures are kept)

詞根記憶：aqua(水)+rium--水族館

例:Feeding hours at the aquarium are popular with the children.

8.aquatic a.水的，與水有關的(relating to water）

詞根記憶：aqua(水)+tic--水的

例:aquatic animals水生動物

同根詞：aaueous(a.水的：似水的)

9.arable a.可耕的（suitable for plowing）

詞根記憶：ar(耕種)+able--可耕的

例:arable lands耕地

10.arbitrary a.任意的，主觀的(depending on individual discretion）

詞根記憶：arbit(判斷)+rary--自作判斷的--主觀的

例:Taxes were irregular in timing and arbdrary inamount.//This intuition is not arbdrary or irrational, but is based on years of painstaking practice.

同根詞：arbitrator(n.仲裁人)：arbitration(n.仲裁，公斷)