1 . 听下面一段较长对话，回答以下小题。
1. Who gave the woman her first mountain bike?

A．Her uncle.

B．Her father.

C．Her brother.

2. Why did the woman slow down at one point in the Regional Championship?

A．The road was full of rocks.

B．She was too tired to speed up.

C．Someone appeared on the road suddenly.

3. What does the woman think is the most important before a race?

A．Doing sports to keep fit.

B．Looking at the route in advance.

C．Making sure the bike is in good condition.

4. What does the woman say about the clothes for a race?

A．They’re tight.

B．They’re pretty.

C．They’re comfortable.

2 . If you're out for a run, what difference does it make if you're able to tough it out for another 50 seconds? If you're less than a minute from the top of the hill, that extra time can make the difference between having reached your goal and snatching defeat from the jaws of victory.

How do you get those extra seconds of energy? A research team at the Texes Tech University developed a study to measure what effect listening to music would have on exercise tolerance. The researchers based the study on a stress testing. As part of the testing, they noted any changes in heart rate and blood pressure as participants underwent physically stressful exercise.

The tests were done on treadmills (跑步机), which increased in both speed and incline (坡度) through three stages. In the final stage, the treadmills moved at 10 miles per hour at a 14-percent grade. Most of these tests were designed to last up to 40 minutes. The average gym-goers lasted 30 minutes. For this study, they divided 127 participants into two groups. One listened to upbeat(快节奏) music, while the other group had earbuds in but did not listen to music.

The group that listened to music was able to outlast the non-music group by an average of 50.6 seconds. Again, being able to go an extra minute may seem like a no-brainer ,but “after 30 minutes, you feel like you are running up a mountain, so even being able to go 50 seconds longer means a lot," said the study's lead author, Waseem Shami, MD.

The study has confirmed something runners and gym-goers have suspected for years: Listening to music during workout can be beneficial to your endurance. "Our findings reinforce the idea that upbeat music can help you exercise longer and stick with a daily exercise routine," said Shami. When doctors are recommending exercise, they might suggest listening to music, too."

1. Why did Shami’s team conduct the research?

A．To test the effect of music on health.	B．To know the cause of failure in sports.
C．To improve runners' exercise tolerance.	D．To record the body change of participants

2. What did the researchers than about the Participants in the stress testing?

A．They ran much faster than average runners.	B．They created a new record of indoor sports.
C．They could run a little longer with music on.	D．They all enjoyed extreme physical challenge

3. What do the underlined words “a no-brainer” mean in paragraph 4?

A．A dull activity.	B．A foolish action.
C．A demanding task.	D．An easy practice

4. What did Shami suggest us doing in the last paragraph ?

A．Developing a daily exercise routine.	B．Listening to music while working out
C．Participating in physical stress testing.	D．Taking exercise as doctors recommend.

3 . Participation in sports benefits health, encourages self-discipline, and develops character and teamwork. The positive effects of sport are well-known: improved body system and muscular fitness lower risk of obesity and depression, and an increased life quality.     1    

Here is one-sports addiction. It may sound contradictory, because we usually reserve the word “addiction” for things that are bad for us, such as drug abuse or alcoholism.    2    Caused by the release of “happiness hormones(荷尔蒙)” after exercising, you can feel really “high” and be hooked on this feeling, which, like those produced by illegal drugs and alcohol, can be habit-forming.

Sports addiction is not taken seriously by everyone, though.    3    Sports addiction is, however, real and harmful.

Sport addicts share many symptoms with other sorts of addicts.    4    This is because they don't give them the chance to recover from working out. They have been so addicted to sports that they don't take time to recover from injuries. Chances of heart attacks and passing out increase, so sports addicts can put themselves at serious risk of harm.

    5    They become dependent on training for feeling good, and life away from training becomes dull. They can also develop tolerance to the “high”, and so need more and more exercise to get the same result. And when not exercising, they experience withdrawal effects, depression and anxiety.

A．They harm their bodies.

B．It may lead to physical injuries.

C．“There're worse things to be addicted to,” some people disagree.

D．Meanwhile, sport addicts may suffer withdrawal symptoms as well.

E．But there really is a sense in which you can become addicted to exercise.

F．Apart from physical damage, sport addicts suffer psychological damage too.

G．Based on all this good news, one might wonder whether there is any drawback.