Some people think that rereading books is so important, other people claim that it’s useless.
Water - the source of life and one of the most valuable wealth of man. From water depends not just a normal life, but the very existence of mankind. After all, it's no coincidence since ancient times people settled along the banks of rivers and lakes, tried to build their homes as close to the water. The natural environment is an amazing world that enchants us with its freshness and purity. It is close to humanity since its inception, and its value can not be overemphasized, because water is, in principle, life, since all living things feed on its healing magic power.Вода – источник жизни и одно из самых ценных богатств человека. От воды зависит не просто нормальная жизнь, но и само существование человечества. Ведь неслучайно с давних времен люди селились по берегам рек и озер, старались строить свои жилища как можно ближе к воде.Водная среда – это удивительный мир, который чарует нас своей свежестью и чистотой. Она близка человечеству с момента его зарождения, и ее значение просто невозможно переоценить, ведь вода – это, в принципе, и есть жизнь, поскольку все живое питается ее целебной волшебной силой.
1) 18км/ч-15км/ч=3(км/ч)- скорость удаления или расстояние которое будет между ними.
Ответ:3км/ч
1. are they working in the garden?
where are they working?
who working in the garden?
are they working or playing in the garden?
they are working in the garden, are not they?
2. will we go to New York next year?
when will we go to New York?
where will we go next year?
will we go to New York or Chicago next year?
we will go to New York next year, won't we?
3. have you just read this book?
what have you just read?
when have you read this book?
have you just read this book or newspaper?
you have just read this book, haven't you?
4. were they in many countries?
where were they?
who were in many countries?
were they in many countries or cities?
they were in many countries, weren't they?
5. do they like playing tennis?
who like playing tennis?
what do they like playing?
do they like playing tennis or football?
they like playing tehhis, don't they?