2. If you ask everybody for 1$ you'll collect lots of money.
3. If David speak to the teachers they will sign the petition.
4. If you don't read our leaflet carefully you shan't understand it.
5. If my sister go on the march my mom will be worried.
6. If it rains on Saturday we'll take a big umbrella.
7. If we take a fast train we shall arrive on time.
1) Does variability of geomagnetic field in time and in a wide range of periods – from minutes to hundreds and thousands of years reflect a complicated of physico – chemical phenomena in the core, lithosphere, ionosphere and magnetosphere of the earth?
2) Are data ongeomagnetic variations with the periods over 1 year, the so – called secular variations (SV), widely used?
3) In general, geomagnetic field variations can be considered as a vector sum of the fields from different sources, can't they?
4) Are there distinctly distinguished global, regional and local components?
5) Do global peculiarities or focuses of SV embrace areas of thousands of kilometers and have their sources in the earth's core?
6) Regional and local effects are determined by modern physico – chemical, geodynamic and electromagnetic phenomena in the earth's crust and upper mantle, aren't they?
7) What is determined by modern physico – chemical, geodynamic and electromagnetic phenomena in the earth's crust and upper mantle?
8) Does the existing chain of magnetic observatories on the territory of Europeallow to study in details the global and regional effects in SV?
9) The local anomalies of SV or the so – called tectomagnetic effects were studied, as a rule, in geodynamic and seismoprognostic testing grounds, weren't they?
Did they leave Spain in1619?
No they left Spain in1519
Was the journey dangerous?
Yes if it was
Did Magellan discover the Pacific ocean?
Yes he did
Did Magellan die with soldiers in the battle?
Yes he died in a battle
Did the shop sailor complete the journey? Yes he did
Did the remaining ship reach Spain in 1523?
No it reached Spain in1522
Have i already read this book?
Это в зависимости от времени, если Pr. Simple, то употр. в утверд. форме ничего (в 3 лице ед.ч окончание S у глаголов) в вопросительной ставь do (с мест. I,you, we,they) и does (c мест. he, she, it). Ве не употребляется ни в одном времени, только в образовании инфинитива