Nobody needs reminding that exercise is good for our health, but we may need reminding that it needs to be done in the right way.

Light exercises are a great way to improve circulation and keep our muscles active, especially if the rest of the day will be spent sitting in front of a computer or in a lecture hall. However, certain sports like long distance running require training to build up our bodies so they can handle the challenge. If we go into such sport cold, it can shock our muscles, hearts, lungs, and other organs and cause severe pain or in some cases, even death.

Some people are born with medical conditions that go unnoticed until they stress the unstable part of their body. A weak heart may never be seen until we do something that causes extreme physical effort. Recently there have been cases of people dying while running long distances. Also, a university student died after taking a 1.000m running exam. Some universities and high schools have cut long distance races (i.e. 3.000m, 5,000m) from their campus sports games, partly because of the supposed danger and partly because they say fewer people are entering such events.

Maybe education about such events is lacking, especially during primary and high school. People participating in such competitions should realize that a reasonable amount of training is required beforehand and having a medical check is wise, especially for a marathon. People shouldn’t be forced to participate in events that push them past their limits, especially if they haven’t warmed-up completely. Cancelling events could lead to people becoming less healthy and overweight. Maybe these events shouldn’t be cancelled, but organizers and participants should be more careful about regular health checks.

【小题1】Why does the author write the text?

A．To give us some reminding on exercises.

B．To persuade us to take less sports.

C．To advise students to have regular exercises.

D．To require cancelling long distance running.

【小题2】What does the underlined word “cold” in paragraph 2 probably mean?

A．Having trained a lot.	B．Without any preparation.
C．Having a low temperature.	D．In an unfriendly way.

【小题3】Why do some universities and schools cancel long distance races?

A．Because no students are willing to enter such events.

B．Because the students’ physical conditions are too poor to finish them.

C．Because long distance running is not fit for students.

D．Because they worry about the supposed danger in such races.

【小题4】What does the author advise us to do before running a marathon?

A．Have a medical check and warm-up exercises.

B．Push ourselves past our limits.

C．Participate in it confidently.

D．Try to lose some weight first.