七、信息还原。
阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。
Many have heard of shark fin soup. But do you realize that you're killing a whole shark each time you enjoy a bowl of shark fin soup?
When people catch sharks, they cut off their fins and throw the sharks back into the ocean.
1
Without a fin, a shark can no longer swim and slowly dies. Sharks are at the top of the food chain in the ocean ecosystem.
2
Many believe that sharks can't become endangered because they are the strongest in their food chain.
3
The number of some kinds of sharks has fallen by over 90 per cent in the last 20 to 30 years.
Environmental protection groups around the world, such as WildAid and the WWF, are teaching the public about "finning".
4
So far, no scientific studies have shown that shark fins are good for health, so why eat them?
5
A. Help save the sharks!
B. They are in great danger now.
C. This is not only cruel, but also harmful to the environment.
D. But in fact, more than 20 million sharks a
caught and traded in this industry every year.
E. If the number of them drops too low, it will threaten(危及) all sea life.
F. They have even asked governments to make laws to stop the sale of shark fins.
G. This is a big problem, especially on foggy and rainy nights.
1.
2.
3.
4.
5.
解析：
【分析】
本题为英语七选五信息还原题，需结合上下文语境、句子间的逻辑关系（如因果、转折、递进、呼吁等）来选择合适选项。解题时先通读全文把握主题（保护鲨鱼），再逐空分析前后句的衔接：第1空承接前文割鳍扔回的行为，说明该行为的性质；第2空承接鲨鱼在食物链顶端的地位，说明数量过低的影响；第3空转折前文“鲨鱼不会濒危”的错误认知，给出实际数据；第4空承接环保组织的行动，说明进一步的举措；第5空为结尾呼吁，点明主题。
【解析】
1. 第1空：前文提到“割掉鲨鱼鳍扔回海里”，后文说“没鳍鲨鱼无法游泳死亡”，中间需说明这种行为的恶劣性，对应选项C（This is not only cruel, but also harmful to the environment.），衔接合理。
2. 第2空：前文说鲨鱼在海洋生态食物链顶端，后文说“很多人认为鲨鱼不会濒危”，中间需说明鲨鱼数量过低的危害，对应选项E（If the number of them drops too low, it will threaten all sea life.），符合逻辑。
3. 第3空：前文是“人们认为鲨鱼不会濒危”的错误观点，后文是“鲨鱼数量下降90%”的事实，需用转折句衔接，对应选项D（But in fact, more than 20 million sharks are caught and traded in this industry every year.），转折自然。
4. 第4空：前文说环保组织教育公众，后文需说明他们的进一步行动，对应选项F（They have even asked governments to make laws to stop the sale of shark fins.），递进合理。
5. 第5空：全文围绕保护鲨鱼展开，结尾需发出呼吁，对应选项A（Help save the sharks!），符合结尾呼吁的语境。
【答案】
1. C 2. E 3. D 4. F 5. A
【知识点】
英语七选五、语篇逻辑衔接
【点评】
本题是典型的英语信息还原题，考查学生对语篇上下文逻辑的理解能力，需结合主题（保护鲨鱼）分析句子间的衔接关系，难度适中，是常见的基础题型。
【难度系数】
0.3
