It is winter now and it is often cold. I really can't stand the cold. So sometime ago I suddenly fell ill. I had a high temperature, a running nose and a sore throat. I also had a splitting headache and a cough. My whole body was aching. My mother fixed me a hot lemonade but that didn't help me much. She wanted to give me some aspirin too, but there wasn't any at home. My mother told me to stay in bed and called a doctor. The doctor came, took off his coat and put on his white gown.
The doctor asked me to strip to the waist. He examined my lungs and throat, took my pulse and temperature, measured my blood pressure. Finally he said that it was a light case of flu and told me to stay in bed and have complete rest. He wrote a prescription for some gargle and cough medicine. He also gave me some sulfa pills, a slip for X-Ray and blood examination. He recommended to apply glass-cups and mustard plasters. I followed all the doctor's instructions and very soon I felt much better. I fully recovered in ten days and
Объяснение:
Sharks (lat. Selachii) are a superorder of cartilaginous fish (Chondrichthyes), belonging to the subclass of elasmobranchii and having the following distinctive features: an elongated body of a more or less torpedo-shaped shape, a large heterocercal caudal fin, usually many sharp teeth on each jaw.
The Russian word "shark" comes from the Old Norse "hákall". The most ancient representatives already existed about 450-420 million years ago.
More than 526 species of sharks are known: from the deep-sea shallow Etmopterus perryi, only 17 centimeters long, to the whale shark (Rhincodon typus) - the largest fish (its length reaches 20 meters). Representatives of the superorder are widely distributed in the seas and oceans, from the surface to a depth of more than 2000 meters. They mostly live in sea water, but some species can also live in fresh water. Most sharks are so-called real predators, but 3 species - whale, giant and largemouth sharks - filter feeders, they feed on plankton, squid and small fish.
