用英语介绍鲨鱼15句，英文介绍鲨鱼
用英语介绍鲨鱼15句，英文介绍鲨鱼
分类: 教育/科学 外语学习
解析:
20 shark facts
1. Great White Sharks grow about 10 inches per year. Great Whites can grow to mature lengths of 12 to 14 feet.
2. New teeth are constantly being formed in rows in a shark's jaw. Shark's teeth are normally replaced every eight days.
3. Some species of sharks can shed as many as 30,000 teeth in their lifetime.
4. Whale Sharks have approximately 300 rows of teeth, with hundreds of tiny teeth in each row.
5. Dried shark skin (shagreen) was used in the past as sandpaper. In Germany and Japan, shark skin was used on sword handles for a non-slip grip.
6. In 1937, shark liver oil was discovered to be rich in vitamin A. Sharks were hunted for the vitamin until 1950, when a synthesizing method was developed for vitamin A.
7. The average life span of a shark is 25 years, but some sharks can live to be 100.
8. The dogfish sharks are named for their tendency to attack their prey as a pack of wild dogs would.
9. Great White Sharks can go as long as three months without eating.
10. Not all sharks have to be in continuous motion to breathe.
11. Bull Sharks can tolerate a wide range of salinity and are often found in freshwater rivers and lakes in Africa and South America.
12. More people are killed each year by dogs, pigs and deer than by sharks.
13. The Pygmy Shark has a maximum length of 11 inches.
14. Sharks have no bones. A shark's skeleton is made up of cartilage.
15. There are more than 340 known species of sharks.
16. Sharks first appeared in the fossil record over 400 million years ago.
17. A significant physical trait that separates a modern shark from an ancient shark is the protrusile jaw, which gives the modern shark more biting force.
18. Sharks can generate about six and a half tons per square inch of biting force.
19. A shark's skin is embedded with dermal denticles, which resemble teeth.
20. The Shortfin Mako shark is probably the fastest fish in the ocean, clocked at about 60 mph.
如下：
A couple of days ago, my dad and I go to the supermarket to buy things. Kingwe saw the sea shark, a shark that is cut in two, I think: sharks in the ocean so ferocious, and King of the sea anyway! But for now, or are we human beings killed, for sale, sell us to eat.
In my opinion, there seem to be two kinds of sharks (character), but the fact that sharks have only one character, in my imagination, the first is: fierce sharks, second: no use of sharks.
In these two species of shark, ferocious sharks is under what circumstances could use the title of it? Is swimming around in the ocean, and very handsome King in front of the sea. Useless shark is a shark be captured by humans, killing, for sale with title.
In the evening, father settle when I went to bed, my dad said to me: "today we see that the shark was cut in two in the future will be eaten by humans, do we humans are cruel, don't you think? "
I replied:" it's very cruel, but, if not cruel, we would starve. Because we still have to eat meat or something. Also, what other herbivores, for example eating cattle, sheep, and our homes not turned into a desert.
Grass, we have better homes. But we are a little cruel. "Dad just smiled and walked out of my room.
Sharks are a type of fish.
There are hundreds of kinds of sharks. Most are about two meters long. The dogfish shark, however, is less than twenty centimeters in length. The biggest whale shark can grow to twenty meters in length. Sharks do not have bones. The skeleton of a shark is made of cartilage. Human noses and ears are also made of cartilage.
A shark has an extremely good sense of smell. It can find small amounts of substances in water, such as blood, body liquids and chemicals produced by animals. Sharks also sense electrical and magnetic energy linked to nerves and muscles of living animals.
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