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
【C9】

选项

答案A

解析 空格位于系动词be之后,介词on之前,因此空格处应填入形容词,与系动词构成系表结构,且be______on应为固定搭配。句子含义为“尽管作为非洲大陆第二大西红柿生产国,尼日利亚却依赖每年价值10亿美元的进口西红柿酱,由于缺乏合适的储存设施导致大约75%的当地产西红柿都被白白浪费掉。”be dependent on是固定搭配,意为“依赖于……”,故答案为dependent。
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