1) During this period the track structure has been substantially improved.
One of the greatest improvements was the elimination of rail joints. In
order to reduce the number of joints the rails are welded into
continuous lengths.These continuous or long welded rails have greater
strength and provide a smoother running of trains at far greater speeds.
2) Another improvement which has made it possible to increase speeds on
railways is the use of concrete sleepers. Thus in some countries ,
concrete sleepers have replaced wooden ones on heavily used main lines
because of their advantages.
Concrete sleepers have a longer life
and a far greater weight than those made of wood. The greater weight of
concrete sleepers provides the greater stability of track.
It is this factor which has greatly contributed to increased speeds.
Ответ взял прямо из текста. Насколько я помню, так надо делать в подобных заданиях.
Brings
will read
arrives
will ask
is
will tell
will phone
come
will ski
snows
Прэзент симпл .Present Simple - факт в настоящем.
Fat and gay, on a winter day,
He came here with us to stay.
But day by day he grew and thined,
And so we brought his younger brother in.
Ответ: A calendar
This is the season when fruit is sweet,
This is the season when school-friends meet.
Ответ: Autumn
This is the season when vegetables grow,
I come to the garden and make water flow.
Ответ: Summer
Higher than a house, higher than a tree
— Oh, what can that be?
Ответ: The sky
I come with cold and snow.
But you like me and know.
Ответ: Winter
Until I am measured
I am not known,
Yet how you miss me
When I have flown.
<span>Ответ: Time</span>
Какой ответ Вы планируете увидеть, если это аудирование. Т.е. это означает, что вы должны послушать текст(отрывок текста) и соединить. Также неизвестен автор учебника и что это за учебник.