2011年GCT英语每日一练（六十六）
2011-10-20 13:21:55 www.gct-online.com
1.Scientists are working hard to come up with a sure solution to the food _________ for mankind.
A. decline B. rarity
C. scarcity D. Shortage
2. Some linguists believe that the _________ age for children learning a foreign language is 5 to 8.
A. optimistic B. optional C. optimal D. Oppressed
3. The gap between those at the lowest level and those at the highest level of income had increased __________, and is continuing to increase.
A. substantially B. successfully
C. succinctly D. Sufficiently
4. He told a story about his sister who was in a sad ___________ when she was ill and had no money.
A. plight B. polarization C. plague D. Pigment
5. The remarkable ________ of life on the Galapagos Islands inspired Charles Darwin to establish his theory of evolution.
A. classification B. variety
C. density D. diversion
答案与解析：
1．【答案】D
【解析】D项shortage n．“不足，缺少”，decline n．“下降，减少，衰落”；rarity n．“稀少，少见的人或东西”(常与不定冠词连用)；scarcity n．“缺乏，稀少”。
2．【答案】C
【解析】C项optimal“最佳的”，A项optimistic“乐观的”，B项optional“可选择的，随意的”，D项oppressed“受压抑的”。译文：“一些语言学家认为孩子学习外语的最佳年龄是5~8岁”。
3．【答案】A
【解析】A项substantially“根本地，充分地”，B项successfully“成功地”；C项succinctly“简洁地，简便地”；D项sufficiently“充分地”。
4．【答案】A
【解析】A项plight“困境”，B项polarization“分化”，C项plague“瘟疫、天灾”，D项pigment“色素，颜料”。
5．【答案】B
【解析】variety意为”变种，多样，种种”，classification作”分类，类别，级别”讲，density意为”稠密，密度”，diversion意为”转移，消遣”。
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