Insects are one of the oldest wildlife of our planet. Today, according to scientists the number of known species of insects has reached nearly two million different species. And every year on this list is added about seven thousand species of insects that have been previously zoologists do not even have a clue . Settling insects gradually , over time, occurred throughout the earth. You can meet them in tropical countries of Africa, and in the temperate latitudes of the Northern Europe. Even in the polar regions and arid deserts insects have adapted to life. There are also domestic insects that are adapted to live in close proximity to humans . Anyone with a child known types of insects such as butterflies , bees , beetles , bugs, flies, mosquitoes and many others. Every child is faced with leaving them in the first to the garden for a walk. Perhaps these are the first representatives of the wildlife encountered by the kid in your life . Structure of the insect is very interesting little child , as it is divided into three notable parts: head , abdomen and chest. Each insect has three pairs of legs and one , and sometimes two pairs of wings . Also, all the insects peculiar antennae on his head, that perform their function senses. In human terms insect life is very short and therefore its development is very fast . The whole cycle of formation lasts no more than six weeks and consists of four periods . Adult insects lay eggs from which larvae emerge in the future , and after some time of larvae formed pupa . And only from the pupa appears already Adult , shaped , viable insect. Insect life is very diverse and fascinating to watch , especially nice to look for insects such as bees and ants , whose activities are , in addition, are useful to humans.
Present Perfect, Past Simple, Past Continuous или Past Perfect. 1. They (told) me yesterday that you (had got) an excellent mark. 2. When did you (receive) a letter from your friend? 3. Our grandmother (was cooking) dinner from twelve till three yesterday. 4. Look! What beautiful flowers she (is buying)! 5. They ( travelled) along the coast of Africa last year. 6. We (have not seen) each other for ages. 7. They (have eaten) all the apples which I (brought). 8. When the children (had had) dinner, they (went) for a walk. 9. Last summer we ( lived) in the country and (went) to the river every day. 10. My sister ( spent) a lot of money yesterday. 11. She is so upset: she (has lost) the key to the front door. 12. By the 1st of September all the children (had returned) from the country. 13. Columbus ( discovered) America 500 years ago. 14. Columbus (did not know) that he (had discovered) America. 15. I have already ( read) five English books. 16. He (had discussed) the problem with a lot of people before he (took) a decision. 17. Mother (has baked) a delicious cake! Sit down at the table and let's eat it! 18. She (was reading) an English book the whole evening yesterday. 19. I have never ( been) to Greece. 20. Have you ever ( been) to the Niagara Falls? 21. At this time yesterday they (were sitting) on the sofa and (listening) to their grandmother who (was telling) them fairy-tales. 22. My friend has just ( rung) me up from London. 23. I (was standing) at the tram-stop when it ( began) raining. 24. We (have not skated) since last winter.
