法洛四联症，不应存在下述项的是（）
A.肺动脉狭窄
B.右心室肥大
C.室间隔缺损
D.主动脉骑跨
E.动脉血氧饱和度>95%
参考答案：E
解析：法洛四联症由以下4种畸形组成：①右心室流出道狭窄（肺动脉狭窄）；②室间隔缺损；③主动脉骑跨；④右心室肥大（属继发性病变）。以上四种畸形中以右心室流出道狭窄（肺动脉狭窄）最重要，是决定患儿病理生理改变、临床严重程度及预后的主要因素。
(2013·高考重庆卷，B)It is easy to overlook the role that your body plays in influencing your mood(情绪)．When you are____，you may find yourself blaming work pressures or an unknown future.However，it could just be that you’ve been sitting behind your desk too long. One way to improve your mood is____.Psychologically，it provides you with a break from the stresses in your life.Also，in the process，you may aim for____goals，like a new personal running record or a better body shape.The achievement of a particular goal makes you feel good and contributes to your____.That is why exercise has been shown to____your selfrespect. You do not have to train yourself____to feel the psychological benefits of exercise.What really matters is____，not intensity(强度)of your exercise.You can try walking for 30 minutes five times per week or simply gardening on weekends.
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