共用题干
Step Back in Time

Do you know that we live a lot longer now than the people who were born before us?One
hundred years ago the average woman lived to be 45.But now,she can live until at least 80.
One of the main reasons for people living longer is that we know how to look after
ourselves better. We know which foods are good for us and what we have to eat to make
sure our bodies get all the healthy things they need.We know why we sometimes get ill and
what to do to get better again.And we know how important it is to do lots of exercise to
keep our hearts beating healthily.
But in order that we don't slip back into bad habits,let's have a look at what life was
like 100 years ago.
Families had between 15 and 20 children,although many babies didn't live long.
Children suffered from lots of diseases , especially rickets（佝偻病）and scurvy（坏血病）,
which are both caused by bad diets.This is because many families were very poor and not
able to feed their children well.
Really poor families who lived in crowded cities like London and Manchester often slept
standing up,bending over a piece of string,because there was no room for them to lie down.
People didn't have fridges until the 1 920s.They kept fresh food cold by storing it on
windowsills（窗台板）,blocks of ice, or even burying it in the garden.
Some children had to start work at the age of seven or eight to earn money for their
parents. If you had lived 1 00 years ago , you might well be selling matchsticks（火柴杆）(a
job done by many children)or working with your dad by now.

People now enjoy longer lives for unknown reasons.
A:Right
B:Wrong
C:Not mentioned