体层摄影中“体层面”是指A．X线管运动轨迹平面 B．欲选成像层面 C．病灶所在层面

You change the channels for the fourth time and realize that once again there’s nothing on television that gets your attention. Not a problem! Throw on some running shoes and comfortable clothes and go for a run.

One of the coolest things about the sport of running is that you don’t need expensive equipment(装备). All you need is a good pair of running shoes and a safe environment. But just because you don’t need much equipment don’t be fooled into thinking the sport of running is easy. No one wakes up and decides to run a marathon without training.

Running makes your heart, lungs, and muscles stronger. It makes you know more about your body. Running also gives you energy by increasing your oxygen(氧气) intake, so you don’t get sick easily. It can even help you keep your mind on school work because exercise helps you to think more clearly.

How do you take part in the sport if you don’t know much about it? Most schools offer cross-country and track programs, but there are also running clubs open to all ages. A simple Internet search can help you find some in your area. The programs show you how running can offer competition or just be for fun. They also teach runners to set realistic goals and take care of their bodies.

Runners have great respect for each other because they know how difficult the sport can be. If you go to a race, you’ll see people cheering for all the runners, from the first place finisher to the last place finisher. Running isn’t always about how fast you are or how far you’re going. It’s about getting out there and doing it. Taking part is more important than competition, and effort is recognized over gift.

If you’re looking for more than just a sport, running may be the perfect choice for you.

小题1:Which of the following is true?

A．Running helps you win a marathon.

B．Running helps you improve your study.

C．Running helps you think more about yourself.

D．Running helps you set realistic goals in your life.小题2:What is the most important for runners in a race?

A．Having fun.

B．Receiving respect.

C．Trying their best.

D．Winning the competition.小题3:What is probably the best title for this passage?

A．Running and Runners

B．Running: Easy or Difficult

C．Running and Watching TV

D．Running: a Sport or a Way of Life

为应对金融危机，拉动内需，湖南省人民政府定今年为“湖南旅游年”，青年旅行社3月底组织赴凤凰古城、张家界风景区旅游的价格为每人1000元，为了吸引更多的人赴凤凰、张家界旅游，在4月底、5月底进行了两次降价，两次降价后的价格为每人810 元，那么这两次降价的平均降低率为（    ）。

作出许可决定的行政机关不依法履行监督职责或者监督不力，造成严重后果的，由其上级行政机关或者( )责令改正。

A．权力机关

B．监察机关

C．检察机关

D．司法机关

父母恩，故乡情，祖国恋，是铭刻在每个子女灵魂深处的情感积淀，是______在每位游子心中的隽永情结。 填入横线部分最恰当的一项是( )。

A．缠绕

B．纠结

C．背负

D．萦绕

认知价值定价法