Реши уравнение x² − 5x + 6 = 0

Вариант №3 Прочитай текст. Для каждого предложения A – E выбери один правильный вариант ответа из трёх предложенных (1, 2 или 3).

Zebras Zebras are interesting animals. They live only in Africa, in different countries on this continent. Like wild horses, zebras live in groups. Big cats, such as lions or leopards hunt zebras. When big cats attack, zebras make a circle and try to fight them off. Scientists don't know why zebras have stripes, but they believe their stripes protect zebras from enemies. Some scientists think the stripes keep insects away. Nobody knows for sure, but there are no two zebras that have the same stripes. People often wonder if zebras are black with white stripes or white with black stripes. Most scientists think zebras are black with white stripes because their skin is dark under the fur. Zebras stand up when they sleep because big cats can attack them any time and they have little time to run away. They sleep only when they are in a large group in order to feel protected. Zebras sleep for seven hours a day. In zoos zebras eat different kinds of fruit such as apples, oranges, bananas, pears, grapes, plums, peaches, strawberries, cherries, vegetables for example carrots and other things. In the wild, they can eat grass, small trees and sometimes berries. In the wild, they can live up to 20 years and about 40 years in a zoo. A zebra can run as fast as 65 kilometres per hour. At the end of November and at the beginning of December, zebras go to the north. It takes them two months to reach the places where they spend winter.

A. Zebras live ...

1. only on one continent.
2. only in one country.
3. in different countries on different continents. [обведено]

B. Scientists believe that ...

1. stripes do not protect zebras from lions.
2. stripes can protect zebras from insects.
3. zebras have white skin.

C. Zebras stand up when they sleep because ...

1. they are afraid of lions.
2. they are in a group.
3. they have no time to sleep.

D. In the wild zebras eat ...

1. only grass.
2. many different kinds of fruit and vegetables.
3. different things.

E. In zoos zebras live ...

1. longer than in the wild.
2. shorter than in the wild.
3. as long as in the wild.

Запиши в таблицу выбранные цифры под соответствующими буквами. [Таблица: A | B | C | D | E; нижняя строка пустая]