Babies are born yogis（瑜伽练习者）．Once we were all able to pull our toes up by our ears and laugh about it．Then we aged, got injured, and began carrying stress in our shoulders and back．In short, we lost our balance．
Yoga（瑜伽） is an ancient practice that helps create a sense of union in body, mind, and spirit．It brings us balance．I was seriously out of balance when I started practicing yoga in 1999．I had plantar fascitis（足底筋膜炎）in both feet, and my doctor had warned me against all the things I loved to do: walking, hiking, and playing tennis．I was desperate for exercise．Yoga became my salvation and even enhanced my other fitness activities．I practice yoga at least twice a week, but I consider yoga to be part of my daily life because after a while you no longer just practice yoga—you love it．
Yoga becomes part of your physical life．Your body grows stronger, more toned, and more flexible as you move from one pose to the other．I spent a week in Mexico at a yoga retreat, and it was the first vacation on which I lost weight．“Rather than building muscle, yoga builds muscle tone,” says Shakta Kaur Khalsa, author of the K．I．S．S．Guide to Yoga．“Because yoga helps maintain a balanced metabolism （新陈代谢), it also helps to regulate weight．Additionally, yoga stretches muscles lengthwise, causing fat to be removed around the cells．” I do yoga poses throughout the day．After hours at my computer, I stretch my stiff shoulders and arms．When I need a boost of energy, I do energizing poses．When I am feeling exhausted at the end of the day, I do restorative poses．
Yoga becomes part of your mental life．Yoga teaches you to focus on breathing while you hold the poses．This attention to breath is calming; it dissolves stress and anxiety．I use yogic breathing on the tennis courts, in the dentist’s chair, and in traffic jams．You should always leave a yoga practice feeling energized, not tired．If you feel tired after yoga, it means you spent the time “fighting” yourself, trying to force yourself into poses．In yoga, you “surrender” to the pose by letting go of the tension．
Yoga becomes part of your spiritual life．Yoga is practiced by people from all religions; it is not restricted to any religious group．Yoga teaches “right” living in how we deal with ourselves and others．As I work on a difficult pose, I learn patience, forgiveness, and the value of gentleness．Yoga advocates proper eating, but you don’t have to be a vegetarian to practice yoga．
72．What would be the best title for this passage?
A．What’s Yoga? B．How I Do Yoga Poses
C．The Benefits of Yoga D．The Varieties of Yoga
73．According to the third paragraph, yoga can help people __________．
A．grow taller B．lose weight
C．become flexible in thinking D．make more friends
74．People feel tired after yoga because __________．
A．they consume energy in practicing yoga
B．they respond well to yoga poses
C．they spend too much time on yoga
D．they force themselves into yoga poses
75．If this passage continues, what will the writer most probably write about in the next paragraph?
A．Yoga as a means to keep fit．
B．Different yoga poses．
C．Popularity of yoga all over the world．
D．Encouraging people to do yoga．
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有两个不同的交点P和Q．
与
共线？如果存在，求k值；如果不存在，请说明理由．
最近意大利罗马大学的FulvioCacace等人获得了极具理论研究意义的N4分子．N4分子结构如图所示，已知断裂1molN-N吸收167kJ热量，生成1molN≡N放出942kJ．根据以上信息和数据，下列说法正确的是（ ）
