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Why Exercise Is Cool?
1. Exercise Strengthens Muscles
Did you ever do a push-up or swing across the monkey bars at the playground?    小題1:   By using your muscles to do powerful things, you can make them stronger. For older teens and adults, this kind of workout can make muscles bigger, too.
2.    小題2:  
Can you touch your toes easily without yelling ouch? Most kids are pretty flexible, which means that they can bend and stretch their bodies without much trouble. Being flexible is having “full range of motion,” which means you can move your arms and legs freely without feeling tightness or pain.
3. Exercise Keeps the Balance
   小題3: Your body needs a certain amount of calories every day just to function, breathe, walk around, and do all the basic stuff.   小題4:   If you’re not very active, your body won’t need as many calories.
Whatever your calorie need is, if you eat enough to meet that need, your body weight will stay about the same. If you eat more calories than your body needs, it may be stored as extra fat.
4. Exercise Makes You Feel Good
It feels good to have a strong, flexible body that can do all the activities you enjoy—like running, jumping, and playing with your friends. It’s also fun to be good at something, like scoring a basket, hitting a home run, or perfecting a dive.
But you may not know that exercising can actually put you in a better mood.   小題5:  It’s just another reason why exercise is cool!
A．So you want to do some aerobic (有氧的) exercise right now?
B．Food gives your body fuel in the form of calories, which are a kind of energy.
C．When you exercise, your brain releases a chemical, which may make you feel happier.
D．Those are exercises that can build strength.
E. Exercise Makes You Flexible
F. Exercise Makes Your Heart Happy
G. But if you’re active, your body needs an extra measure of calories or energy.

小題1:D
小題2:E
小題3:B
小題4:G
小題5:C

試題分析：本文敘述了為什么鍛煉是酷的？一是鍛煉能夠鍛煉肌肉。二是鍛煉能使身體有柔韌性。三是鍛煉能使身體保持平衡。四是鍛煉能使人感覺心情好。短文從以上四個方面進行了闡述。
小題1:考查上下文句意和邏輯關系：根據Did you ever do a push-up or swing across the monkey bars at the playground?By using your muscles to do powerful things, you can make them stronger. 根據上下文可知是這些鍛煉可以增強體力，應選D。
小題2:考查上下文句意和邏輯關系：根據Can you touch your toes easily without yelling ouch? Most kids are pretty flexible 鍛煉能使身體靈活，故選E。
小題3:考查上下文句意和邏輯關系：根據Your body needs a certain amount of calories every day just to function,食物能給人一定的熱量，故選B。
小題4:考查上下文句意和邏輯關系：根據If you’re not very active, your body won’t need as many calories. 可知，如果你是愛運動的，你的身體需要一個額外的熱量或能量。故選G。
小題5:考查上下文句意和邏輯關系：根據But you may not know that exercising can actually put you in a better mood.可知應選C。
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