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  3. In the past 12 months, Nigeria has suffered from a shrinking economy, a sliding currency, and a prolonged fuel shortage. Now, Af

In the past 12 months, Nigeria has suffered from a shrinking economy, a sliding currency, and a prolonged fuel shortage. Now, Af

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问题    In the past 12 months, Nigeria has suffered from a shrinking economy, a sliding currency, and a prolonged fuel shortage. Now, Africa’s largest economy is facing a food crisis as major tomato fields have been destroyed by an insect, leading to a nationwide shortage and escalating prices.
   The insect, Tutaabsoluta, has destroyed 80% of farms in Kaduna, Nigeria’s largest tomato-producing state, leading the government there to declare a state of【C1】______. The insect, also known as the tomato leaf miner, devastates crops by【C2】______on fruits and digging into and moving through stalks. It【C3】______incredibly quickly, breeding up to 12 generations per year if conditions are favorable. It is believed to have【C4】______in South America in the early 1900s, and later spread to Europe before crossing over to sub-Saharan Africa.
   In Nigeria, where tomatoes are a staple of local diets, the insect’s effects are devastating. Retail prices for a【C5】______of tomatoes at local markets have risen from $0. 50 to $2. 50. Farmers are reporting steep losses and a new $ 20 million tomato-paste factory has【C6】______production due to the shortages.
   Given the moth’s ability also to attack crops like pepper and potatoes, Audu Ogbeh, Nigeria’s minister of agriculture, has warned that the pest may "create serious problems for food【C7】______" in the country. Ogbeh says experts are investigating how to control the pest’s damage and prevent its spread, which has gone largely【C8】______until now.
   Despite being the continent’s second-largest producer of tomatoes, Nigeria is【C9】______on $ 1 billion worth of tomato-paste imports every year, as around 75% of the local harvest goes to waste thanks to a lack of proper storage facilities. A further【C10】______in local supplies is yet another unwelcome setback to the industry.
A)dependent I)originated
B)embarking J)reduction
C)emergency K)reproduces
D)feeding L)security
E)grazes M)terror
F)halted N)unchecked
G)handful O)untouched
H)multitude
【C8】
选项
答案N
解析 空格位于has gone largely之后，此处go为系动词，空格处应填入形容词，构成系表结构。备选项中有三个形容词，分别是dependent“依赖于……的”，unchecked“未受抑制的，未受制止的”及untouched“未被触摸的，不受影响的”。本句含义为“奥贝赫说专家们正在研究如何控制病虫害并控制其传播，而直到现在人们对这个问题______。”根据句意判断，“直到现在，该问题还未加以制止”，因此选unchecked“未受抑制的，未受制止的”。
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