[答案] D. proceeded.

　　[注释]proceed form (=arise form) 来自; 由......产生：1) Clouds of smoke proceeded form the chimney. (从烟囱里升起缕缕浓烟。) 2)This proceeded from ignorance. (这是出于无知。)

　　[注意] proceed 的其他用法： (=go on [to do sth.]; continue) 接着 (做某事) ; 继续进行; 1) He proceeded to give me a vivid description of the mountainous scenery there. (他接着给我栩栩如生地描述那里的山区景色。) 2) 接介词with; Now please proceed with your story. (现在请你接着将下去。) 3) 接介词to: We will now proceed to the next business. (我们现在将接着干下面的一件事。) 4) 准备取得 (某种学位) ：He will proceed to the degree of M.A. this year. (他准备今年取得文科硕士学位。)本题译文：凯特想当护士的志向出自于帮助他人的愿望。

　　[答案] D. conservation.

　　[注释] conservation 保存(自然资源等) the conservation of soil and water 水土保持; the law of conservation of energy 能量守恒定律。observation 观察; reservation (旅馆房间、戏院座位等的) 预定; 保留 (意见) ; [美]保留地：1) Have you make your reservations? (你预定了没有?) 2) I will accept the suggestion without reservation. (我将毫无保留地接受这项建议。) 3) The government has set apart Indian reservations. (政府已经划出印地安人保留地。) preservation 保存 We must strive for the preservation of our natural resources.(我们必须努力保护自然资源)conservation, preservation, reservation 从汉语概念出发时很容易混淆。Conservation 是动词conserve 派生的名词, 与原来动词的意义相同, 表示"保持、保存”时, 强调“珍惜、节用。 Preservation 是动词preserve 派生的名词, 强调“收藏、保存”使之完好无损或质量不变;常与食品、博物馆收藏的展品等词搭配。Reservation 主要指意见、看法等的“保留”; 作“保留地”解时, 尤指美国印地安人保留地或澳大利亚土著民族保留地。本题指自然生态的保持, 用conservation 最切题。本题译文：这个珍禽巢居的岛已宣布为自然保护区。

　　[答案] A. take.

　　[注释]take charge of (=to be or become responsible for sb. or sth.) 负责、掌管、看管; He took charge of the department (or the children) .

　　[答案] C. piling.

　　[注释] pile up (=lay in a pile or as if in a pile) 把......放成一堆, 堆积：pile up the books on the table (把书堆在桌子上) 。Pile up 作不及物动词用, 意为“积压; (若干汽车) 相撞”：1) Perishable goods are piling up at the docks. (码头上易腐烂的货物堆积如山。) 2) Several

　　cars piled up after ignoring the fog warning on the motorway. (由于无视高速公路上的大雾警告, 有好几辆汽车相撞。)

　　[答案] D. charged.

　　[注释]be charged with 受指控犯有......; He was charged with murder. (他受指控犯有凶杀罪。)