Remember how great exercise was when you were a little kid? Back then, racing around the playground or skipping rope for hours, you weren’t thinking fitness, you were thinking entertainment. But in this age of high-tech home equipment and underused gym memberships, the simple joy of jumping rope has been forgotten. Rediscovering it will give you a total-body exercise you can find.
Although considered an excellent form of exercise, jumping rope has never gained widespread acceptance because of two fundamental reasons. First, most people recognize jumping rope as an excellent form of cardiovascular (心血管的) exercise, but they also believe that it is simply too difficult. In other words, they don’t think they’ll be able to continue jumping for the near 20 minutes that it takes to achieve a beneficial physical outcome. Second, many view it as somewhat boring and overly repetitive—not as something fun or enjoyable.
As a matter of fact, jumping rope can be great fun if you find a proper way to practice it. Instead of doing the usual two-foot bounce over and over again, people good at rope-jumping often change their pattern every 10 or 20 jumps. A single bounce, a double–bounce, a skip, a knee-up, side swings, as well as a variety of other easy-to-learn free-style rope-jumping.
Now researchers are learning that jumping rope also prepares the brain for learning. It is an exercise allowing both brain hemispheres to perform in parallel to each other. In short , jumping rope can be a life-long activity requiring little equipment, time and space, yet leading to a much healthier life.
From the first paragraph we learn that         .

A．jumping rope has faded from people’s memories

B．people now have more advanced equipment

C．racing around the playground was preferred

D．people now like to have exercise in a gym

Rope jumping has not spread widely because       .

A．it benefits the cardiovascular system	B．it is neither easy nor enjoyable
C．it is considered boring and repetitive	D．it requires little equipment, time and space

The first sentence in the 3rd paragraph implies         .

A．there is only one proper way to follow	B．the usual way should not be used
C．the easiest way is always the best	D．there are many ways to follow

What is the author’s attitude towards rope jumping?

A．He is arguing against it.	B．He is in favor of it.
C．He is sitting on the fence of it.	D．He is not clear about it.