15．The illegal ivory trade （象牙貿(mào)易） has been a major problem in Africa for decades．Poachers （偷獵者） and hunters have killed hundreds of thousands of elephants to obtain this precious material．Now the areas in which they do it are taking action．The International Union for Conservation （保護） of Nature （IUCN）announced on Dec 3that key states （29）where poaching takes place have made a promise to stop the ivory trade and protect Africa's elephants．
Recently，top officials and experts from 30states met to discuss how to protect Africa elephants．The conference，（30）organized （organize） by the IUCN and the government of Botswana，was held in Gaborone，Botswana's capital city．
In （31）the1980s，as many as 1million elephants across Africa were killed for ivory．The ivory （32）was used （use） to make jewelry and other items．This continued until 1989，（33）when the convention （大會） on International Trade in Species voted to ban all trade in ivory．Then，elephants'population slowly began to increase．
According to the IUCN，2011saw the highest levels of poaching and illegal ivory trading in at least 16years．Around 25，000elephants were killed in Africa that year．"With an estimated 22，000elephants illegally （34）killed （kill） in 2012，we continue to face a critical situation，"said John E．Scanlon，CITES Secretary-General．
At the meeting，key Africa states where elephants make （35）their home agreed to develop a"zero-tolerance approach"to poaching．The deal calls for tough sentences for poachers and hunters，and increased cooperation between states where poaching and hunting is a big problem．All participants at the conference agreed to sign the deal．With these states （36）coming （come） together，there may be hope for elephants．
分析 本文主要講述的是國際自然與自然資源保護聯(lián)合會通過的一項協(xié)議，要求對于象牙貿(mào)易零容忍，要求保護非洲大象．
解答 29．where；考查定語從句，先行詞states在從句中充當(dāng)?shù)攸c狀語，因此使用where引導(dǎo)．
30．organized；考查非謂語，句子謂語動詞是was held，organize應(yīng)使用其非謂語形式，與其邏輯主語The conference構(gòu)成被動的關(guān)系，因此使用過去分詞形式．
31．the；考查冠詞，表示"在…年代"使用定冠詞the．
32．was used；考查時態(tài)和語態(tài)，句子表示的是過去的事情，因此使用一般過去時，use與主語The ivory構(gòu)成被動的關(guān)系，因此使用was used．
33．when；考查定語從句，句子先行詞 1989，在從句中充當(dāng)時間狀語，因此使用when引導(dǎo)．
34．killed；考查with的復(fù)合結(jié)構(gòu)，句中包含with+賓語+賓語補足語，kill與賓語elephants構(gòu)成被動的關(guān)系，因此使用過去分詞充當(dāng)賓語補足語．
35．their；考查代詞，此處表示"大象的家"使用形容詞性物主代詞their．
36．coming；考查with的復(fù)合結(jié)構(gòu)，句中包含with+賓語+賓語補足語，come與賓語states構(gòu)成主動的關(guān)系，因此使用現(xiàn)在分詞充當(dāng)賓語補足語．
點評 對于語法填空這類題，一是懂得分析句子結(jié)構(gòu)，二是知道充當(dāng)各個句子成分的詞類或詞性，從語法上確定答案，當(dāng)然，對于某些固定搭配也要牢記，在平時的學(xué)習(xí)中要多積累這些詞匯或短語，對于句子使用的時態(tài)語態(tài)也要通過語境進行確定．
