阅读理解。
A new guidebook says being_happy_is_just_like_being_fit-you need to practice the skills
needed to get this emotion,even during the darkest times.
Roadtesting Happiness:How to be Happier by Australian journalist and author Sophie
Scott is a selfhelp book with a difference."Being happy is something you need to focus on；
it doesn't come as a matter of course," Scott said."You always need to make an effort to be
happy,even if you reach the point of saying you are contented,you still need to keep focusing
and working on the things that made you happy." Scott also said the book was born out of her
interest in the human mind as well as how difficult she found it to cope after her mother died of
cancer two years ago.
"I was always interested in psychology,but a lot of happiness books don't address the fact that
you can be happy even if your life isn't going according to plan.The key is managing expectations."
She says,"In the book,I focused on what were the things most likely to make people happy,the
ones with the most scientific evidence." People should think that being happy is yet another task
you have to do and then feel guilty when you don't do it.Scott says the road to a positive outlook
begins with very easy,small steps.
"Women in particular today______________:they've got to be thin,got to have a career,got
to have a perfect relationship so the last thing you need is to be thinking you've got to be happy
all the time," she said."But it is important to improve your quality of life.Stop rushing around and
filling each moment of the day with things to do,and then sit down and think about your life and
how you're feeling.The things I got out of this were not things that take a lot of effort:feeling more
grateful for the things you've got；adjusting your reaction to situations and people.It's about changing
small habits,more tinkering around the edges instead of totally checking and changing your life."
1．By saying "being happy is just like being fit",the author probably means________.
A．people should practice how to remain happy
B．people should spend more time working out
C．keeping happy is the key to continuing our life
D．it's difficult for people to keep happy all the time
2．What should we do if we want to remain happy in Scott's opinion?
A．Do some scientific research into the skills of being happy.
B．Work hard to achieve your expectations.
C．Read more books about psychological activities.
D．Think that being happy is a very important task to do.
3．Which of the following would be proper to be filled in the blank?
A．get high expectation
B．feel overloaded
C．can't look after themselves well
D．have no friends to help them
的变化率均匀减小时，圆环中的感应电流的大小为__________.