NB: In the Conditional sentences of Type II, the verb to be used in the subordinate clause can acquire the form of were for he, she, it and I.
13. Put the verbs in brackets in appropriate form so that Conditional
sentences of Type II are correct. Make your choice between positive and
negative forms.
1. The wire (rotate) around the magnet if it (be supplied) with
current from a chemical battery.
2. If you (move) a magnet through a loop of wire, an electric current
(flow) in that wire.
3. The current also (flow) if the loop (be moved) over a
stationary magnet.
4. If you (rub) the amber for long enough, you (get) an
electric spark to jump.
5. If you (study) the subject closer, you (see) many ways of
carrying an electric current.
6. A proton and a neutron (move) very slowly if they (be) in a
helium nucleus.
7. Vacuum furnaces make use of induction heating for the production of
special steels and other alloys that (oxidize) if one (heat)
them in the presence of air.
14. Put the verbs in brackets in appropriate form so that Conditional sentences
of Type III are correct. Make your choice between positive and negative forms.
1. If they (have) difficulties with the engine, the passengers
(sit) in the plane when the bomb went off.
2. Audible noise (be produced) by cookware exposed to high
magnetic fields if the cookware (have) loose parts.
3. If a positive charge (be brought) near the metal object, the
negative charges in the metal (be attracted) toward it.
4. If the external charge (be) negative, the polarity of the charged
regions (be reversed).
5. If an electrical contact (be made) between the electroscope
terminal and ground, it (cause) charge to flow from ground to the
terminal.
6. If a positive charge (be brought) near a nonconductive object, the
electrons in each molecule (be attracted) toward it.
7. If a liquid or gas (contain) ions, then the ions (be made) to
flow as an electric current.
Россия – великая страна и только ленивый не знает историю ее возникновения, развития и становления. Она занимает площадь около 17 миллионов километров. Расположилась страна в Северном полушарии и большая часть материка Евразии принадлежит именно ей. У России общие границы с восемнадцатью странами, в том числе и по морю. В море мы граничим с США и Японией.
В России большое количество водоемов, рек, озер.И только в нашей стране есть самое чистое озеро и глубокое на земле – Байкал. В России и есть самое крупное в мире море - Каспийское.
Столицей России является город Москва, здесь развита инфраструктура, город который богат своей историей.
Russia is a great country, and only the lazy do not know the history of its origin, development and education. It covers an area of about 17 million kilometers. The country is located in the northern hemisphere, and most of the continent Eurasia belongs to it. Russia has common borders with eighteen countries, including maritime. At sea, we border the USA and Japan.
In Russia, a large number of reservoirs, rivers, lakes. And only in our country the cleanest and deepest lake on earth - Lake Baikal. Russia has the largest sea in the world - the Caspian Sea.
The capital of Russia is Moscow, infrastructure is developed here, a city with a rich history. I love Russia.
Надеюсь правильно)