This button is designed to give the users easy and quick to Facebook, no matter what they happen to be doing on the phone. A. access B. passage C. way D. approach 题目和参考答案——青夏教育精英家教网—

     We all need physical exercise.Exercise uses up food we eat and keeps the body full of
energy.It works your muscles and makes your heart work hard so as to send blood to your
muscles.So,exercise makes your heart and muscles strong.Exercise also makes you feel
refreshed.If you exercise a couple of times a week,you will stay happy and healthy.
     Some Western countries,such as the United States,have problems with exercise.In the US,
many people don't have enough exercise because it is hard for them.People have to work
from dawn till dusk,so they don't have time to take exercise.They work in office buildings
sitting in chairs all day long in front of computers.They cannot get much exercise sitting at desk
passively.
     Some Westerners can get exercise walking from their homes to work.However,the majority
of people cannot do this.It is too far from their homes to their offices.They have no choice but
to drive to work.In fact,some have to drive one or two hours to their offices.This is unfavourable
in two ways.First,these people don't have a chance to exercise because they are sitting in
their cars for two to four hours each day.Second,driving is challenging especially in rush hours
and calls for too much attention.It makes a person worn out.So,when these people arrive home
at night,they don't have the desire to take exercise after work.
     Today,many people in the West are overweight,which causes health problems for them.
Doctors say exercise can help people both lose weight and improve their health.So many
people are trying to get more exercise.But it takes time to change,and when people don't
see a difference right away,they will lose heart and stop exercising.

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