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训练2 体裁：说明文 主题：人与动物 难度：★★★★ 建议用时：8 min 正确率：/5
（原创）Scientists on a National Geographic research trip to the Solomon Islands have discovered the world’s largest coral. The single coral colony(珊瑚群) is so large that it can be seen from space.
Though underwater corals may look like rocks, they are actually made out of millions of tiny animals called “polyps”. 1.
But in this case, scientists discovered a giant structure built completely out of one species of coral, known as Pavona clavus. All of the polyps in this colony are the same kind. And the researchers believe this colony contains about one billion coral polyps.
2.
The colony is believed to be between 300 and 500 years old. It’s a massive rolling mound made up of thousands of smaller lumps. The coral is mostly brown, but it also has yellow, blue, and red patches. 3.
Since the giant coral colony is doing well, that may mean that it can survive in warmer temperatures. Clearly, it had to be difficult to remain alive for hundreds of years. As one marine scientist said, “Anything old is really good at surviving.” That could be good news. 4.
5.
A. Together, the polyps form a colony
B. This is often called “coral bleaching(漂白)”
C. It’s a dream to see something wonderful like this
D. The coral colony is home to many kinds of sea life
E. The blue whale is usually considered the largest creature in the ocean
F. The discovery of the coral colony is also important for the Solomon Islands
G. It might mean that the colony will be able to produce new corals that can survive in warmer waters
（原创）Scientists on a National Geographic research trip to the Solomon Islands have discovered the world’s largest coral. The single coral colony(珊瑚群) is so large that it can be seen from space.
Though underwater corals may look like rocks, they are actually made out of millions of tiny animals called “polyps”. 1.
A
. ＞＞ 词汇衔接 A coral reef is normally built out of lots of colonies of different kinds.But in this case, scientists discovered a giant structure built completely out of one species of coral, known as Pavona clavus. All of the polyps in this colony are the same kind. And the researchers believe this colony contains about one billion coral polyps.
2.
E
. But the giant coral is even larger. It measures(量度为) 111.5 feet wide by 105 feet long, and it’s about 18 feet high. In all, the coral colony covers about the same area as five tennis courts.The colony is believed to be between 300 and 500 years old. It’s a massive rolling mound made up of thousands of smaller lumps. The coral is mostly brown, but it also has yellow, blue, and red patches. 3.
D
, including shrimp, crabs, and different kinds of fishes.Since the giant coral colony is doing well, that may mean that it can survive in warmer temperatures. Clearly, it had to be difficult to remain alive for hundreds of years. As one marine scientist said, “Anything old is really good at surviving.” That could be good news. 4.
G
. ＞＞ 结构衔接5.
F
. ＞＞ 结构衔接 The Po’onapaina Tribe(部落), which is responsible for the waters around Malaulalo, has been working to protect the area. Now tribe members hope the discovery will encourage the country to protect the area even more.A. Together, the polyps form a colony
B. This is often called “coral bleaching(漂白)”
C. It’s a dream to see something wonderful like this
D. The coral colony is home to many kinds of sea life
E. The blue whale is usually considered the largest creature in the ocean
F. The discovery of the coral colony is also important for the Solomon Islands
G. It might mean that the colony will be able to produce new corals that can survive in warmer waters
答案
训练2 【语篇解读】本文是一篇说明文，讲述了科学家在所罗门群岛发现了世界上最大的珊瑚群，它大到就算在太空中也能看见。
1. A 根据下文“A coral reef is normally built out of lots of colonies of different kinds.”可知此处讲的是珊瑚礁的形成，通常是由许多不同的生物群构成的，再根据下文“All of the polyps in this colony are the same kind.”可知，本段讲的是一般情况，下文是特殊情况，故选 A。
＞＞ 词汇复现
2. E 根据下文“But the giant coral is even larger. It measures 111.5 feet wide by 105 feet long, and it's about 18 feet high.”可知这里说的是与大小相关的内容，选项 E 与下文内容构成转折关系，故选 E。
3. D 根据下文“including shrimp, crabs, and different kinds of fishes”可知这里说的是珊瑚群内居住了各种生物，including 是对上文的一个解释，此处选项 D 与下文构成解释关系，故选 D。
4. G 根据上文“Anything old is really good at surviving.”可知本段讲述了古老的物种都很善于存活，G 选项说珊瑚群可以在温暖的水域中繁殖出新的珊瑚，总结了这一段科学家们对于珊瑚群在温暖的水域存活的看法。此处位于段尾，是本段的结论概括句，故选 G。
＞＞ 段尾
5. F 根据下文“The Po'onapaina Tribe, which is responsible for the waters around Malaulalo, has been working to protect the area.”可知这个珊瑚礁意义重大，部落的人们决定保护这片区域，此处位于段首，为本段的主题句，故选 F。
＞＞ 段首
1. A 根据下文“A coral reef is normally built out of lots of colonies of different kinds.”可知此处讲的是珊瑚礁的形成，通常是由许多不同的生物群构成的，再根据下文“All of the polyps in this colony are the same kind.”可知，本段讲的是一般情况，下文是特殊情况，故选 A。
＞＞ 词汇复现
2. E 根据下文“But the giant coral is even larger. It measures 111.5 feet wide by 105 feet long, and it's about 18 feet high.”可知这里说的是与大小相关的内容，选项 E 与下文内容构成转折关系，故选 E。
3. D 根据下文“including shrimp, crabs, and different kinds of fishes”可知这里说的是珊瑚群内居住了各种生物，including 是对上文的一个解释，此处选项 D 与下文构成解释关系，故选 D。
4. G 根据上文“Anything old is really good at surviving.”可知本段讲述了古老的物种都很善于存活，G 选项说珊瑚群可以在温暖的水域中繁殖出新的珊瑚，总结了这一段科学家们对于珊瑚群在温暖的水域存活的看法。此处位于段尾，是本段的结论概括句，故选 G。
＞＞ 段尾
5. F 根据下文“The Po'onapaina Tribe, which is responsible for the waters around Malaulalo, has been working to protect the area.”可知这个珊瑚礁意义重大，部落的人们决定保护这片区域，此处位于段首，为本段的主题句，故选 F。
＞＞ 段首
